Centrifugal Roof Exhaust Fans
Series L
Low Silhouette
Louvered Penthouse Style
LDP/LBP
Fabra Hood Style
LD/LB
April
2008
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Unique Construction Features
Fabra Hood Style
Louvered Penthouse Style
• Hinged Hood
which may be hinged to provide quick
access to the motor and drive assembly.
Access may be gained by simply removing
two of the four hood fasteners or all
fasteners for complete removal.
• Hinged Cover - All sizes feature an
aluminum cover which may be hinged to
provide quick access to the motor and
drive assembly. Covers are fastened down
with a quick release hood latch.
• Large Interior Dimensions - All sizes allow
dimensions offer clearance for inspection,
cleaning, or maintenance of the motor,
wheel, belt(s), and drives.
• Strength & Weather Resistant - Each unit
features storm resistant aluminum louver
blades with mitered corners. For decades,
our storm resistant blades have proven
highly effective. Each sturdy extruded
aluminum louver blade has a material
thickness of 0.080 inches.
• Large Interior Dimensions - All sizes allow
offer clearance for inspection, cleaning, or
maintenance of the motor, wheel, belt(s),
• Strength & Weather Resistance - The
hood is designed with arched panels
manufactured of heavy gauge, precision roll
formed steel with interlocking edges. Each
interlocking rib creates a tight, weather
resistant seal. Heavy gauge steel support
members provide structural strength. The
first hood was put into service over 30
years ago.
Greenheck’s interlocking rib design combines
four material thicknesses with I-beam design
principles producing a hood far superior
in strength to
Greenheck’s louvered
penthouse hoods feature
heavy gauge extruded
aluminum louvers
conventional
designs (an
with mitered corners
for a clean, finished
important feature
in high wind
appearance and weather
resistant construction.
and snow load
regions).
The interior vertical edge of the curb cap
forms the throat and weathershield. Each
corner is also shielded to prevent leakage.
Formed channels
adjacent to the ribs provide water drainage to
ensure weather tightness.
Penthouses are available in aluminum for
lasting durability and appearance.
Hoods are available in galvanized steel,
painted steel, or aluminum construction.
3
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1
6
12
10
5
2
9
15
11
14
13
LB/LD
FABRA HOOD STYLE
8
4
6
10
11
13
7
5
9
3
LBP/LDP
LOUVERED PENTHOUSE STYLE
4
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Unique Construction Features
1
9
FABRA HOOD STYLE - Models LD and LB have
a rib-lock aluminum housing. Hood panels are
interlocked and attached to sturdy aluminum
rails. (Galvanized housings are optional).
MOTOR - Permanently lubricated, sealed ball
bearing motors are selected to provide years of
trouble-free operation.
10 DRIVE ASSEMBLY - Drives are oversized 150%
of driven horsepower. Machined cast iron
pulleys are factory set to the required RPM and
are adjustable for final system balancing. Belts
are static free and oil resistant.
HINGED ACCESS - The entire hood assembly
on models LD and LB can be hinged open for
access to the internal fan components.
2
3
LOUVERED PENTHOUSE - Models LDP and
LBP penthouse style housings are constructed
of heavy extruded aluminum louvers with
mitered and welded corners.
11
WHEEL - An aluminum, backward inclined,
non-overloading, centrifugal wheel is utilized
to deliver maximum efficiency. Each wheel is
statically and dynamically balanced.
HOOD COVER - Models LDP and LBP
aluminum hood covers are hinged and
removable for access.
4
5
VIBRATION ISOLATORS - Support the drive
assembly and wheel without steel to steel
contact providing long life and quiet operation.
12
13
14
DRIVE FRAME - Constructed from heavy
gauge galvanized steel. Belt adjustment is
accomplished by loosening fasteners, sliding
the motor plate, and retightening fasteners.
BIRDSCREEN - Galvanized rigid wire protects
the fan’s discharge from birds or small objects.
(Aluminum birdscreen is optional).
FAN SHAFT - Precisely sized, ground, and
polished so the first critical speed is at least
25% over the maximum operating speed. Close
tolerances between the shaft and bearing result
in longer bearing life.
WINDBAND - Lower windband assembly
ensures weathertight and rigid unit
construction.
6
15 DISCONNECT SWITCH - NEMA-1 switch is
factory mounted and wiring is provided from
the motor to the disconnect enclosure as
standard. All wiring and electrical components
comply with the National Electric Codes (NEC)
and are UL Listed or Recognized.
BEARINGS - 100% factory tested and designed
specifically for air handling applications with
7
8
a minimum L life in excess of 100,000 hours
10
(L average life of 500,000 hours).
50
CURB CAP - Curb cap has prepunched
mounting holes to ensure correct attachment to
the curb.
CONDUIT CHASE - A large diameter conduit for
installing electrical wiring through the curb cap
into the motor compartment. (Not shown)
16
STANDARD INSTALLATION
Models LB, LD, LBP, and LDP exhaust fans are designed
to meet the needs of general clean air applications. Tests
have been conducted to ensure safe and reliable fans
capable of withstanding normal exhaust conditions.
When roofing materials extend to the top of the curb,
roof curbs should be 11⁄2 in. (38 mm) (3/4 in. (19 mm)
on a side) less than the unit curb cap to allow for
roofing and flashing.
For recommended duct size, damper size, and
roof opening dimensions, refer to CAPS or the
performance data pages.
8 to 12 in.
(203 to 305 mm)
3/4 in.
(19 mm)
Installation must include a means for inspecting,
cleaning, and servicing the exhaust fan.
Due to the varying airstreams encountered in
commercial ventilation, system designers must
be aware of national, state, and local codes and
guidelines governing these installations. Local code
authorities should be consulted before proceeding
with any ventilation project.
Damper
Recommended
Duct and
Damper Size
1 1/4 in.
(32 mm)
1 1/4 in.
(32 mm)
Recommended
Roof Opening
5
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Options and Accessories
BIRDSCREEN - Galvanized mesh is standard.
Optional aluminum or stainless steel rigid wire are
also available.
DISCONNECT SwITCHES - A wide selection
of NEMA rated switches are
available for positive electrical
shutoff and safety, including:
dust-tight, rainproof, and
corrosion-resistant. Switches
may be internally or externally
mounted.
HOOD INSULATION - Hood insulation is dual-
density to minimize condensation, reduce thermal
transfer, and enhance sound absorption at high and
low frequencies.
LIFTING LUGS - Four heavy gauge steel brackets
are available to provide lifting points when raising
the fan to the roof.
SPEED CONTROLLERS - Available for use with
shaded pole and permanent split capacitor (PSC)
open motors on models LD and LDP fans. They
provide an economical means of system balancing
with direct drive fans.
TIE DOwN POINTS - Four heavy gauge steel
brackets are available to secure the fan in heavy
wind applications. Cables and anchors by others.
CURB EXTENSIONS - Extensions raise the fan
discharge above the roof line and provide an
accessible mounting location for dampers. Insect
screen bases
constructed with
a removable
COATINGS - All Greenheck coatings and resistance
charts can be found in the performance coatings
catalog. A wide variety of coatings and colors are
available in two categories:
Decorative coatings – Sixteen standard colors
are available.
fine mesh are
recommended for
applications where insect
Protective coatings – Five electrostatic applied
powder coatings are available to protect against
most environments.
entry must be prevented. Curb
extensions are not available with LDP and LBP
severe duty construction models.
DAMPERS - Designed to prevent
outside air from entering back
into the building when fan is
off. Options include gravity and
motorized dampers. Damper
sizes are shown on each
ROOF CURBS - Prefabricated roof curbs reduce
installation time and costs by ensuring compatibility
between the fan, curb, and roof opening. All curbs
are insulated with fiberglass. A
wide variety of roof curbs
are available including
performance data page.
flanged, pitched, and
sound-absorbing.
CURB SEAL - Rubber seal between fan and curb to
ensure proper sealing when attached to a curb.
6
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Severe Duty Option
SEVERE DUTY - Specifically designed for applications with
extremely high structural design load requirements. The severe
duty models LDP and LBP are far superior to any centrifugal roof
exhaust fan currently in the market. Designed with structural steel
supports and ESD-603D louver blades, the severe duty louver
enclosure (SDLE) may be used in any application which requires a
fan to endure high winds with the potential of wind blown debris.
The louvered housing has been tested in accordance with the
following Miami-Dade test protocols:
• Large Missile Impact Test - TAS-201-94
• Uniform Static Air Pressure - TAS-202-94
• Uniform Cyclic Wind Loading - TAS-203-94
To meet the above protocols, the severe duty fan must be mounted
on a severe duty roof curb, which is attached directly to the building
structure. Maximum design load is 140 psf.
NOTICE OF ACCEPTANCE NUMBER 03-0422.05
Available on sizes
• LDP - 60 though 120
• LBP - 10 through 30
Weights and dimensions will vary from standard LDP and LBP construction.
Severe Duty Installation
Models LDP and LBP severe duty exhaust fans are designed to meet the needs of general clean air
applications. Tests have been conducted to ensure safe, rugged and reliable fans capable of withstanding
severe exhaust conditions.
The severe duty roof curb model SD is supplied
with this product and is designed with 12 gauge
welded steel construction. Greenheck
recommends the severe duty curb to be
anchored to the structure of the building.
Dependent upon roofing material it shall be
bolted and welded. For recommended duct
3/4 INCH (19 MM)
size, refer to CAPS or installation manual.
THROAT DIMENSION
(ROOF OPENING)
1 3/4 INCH (44 MM)
1 3/4 INCH (44 MM)
Installation must include a means for
inspecting, cleaning, and servicing the
exhaust fan.
OUTSIDE CURB DIMENSION
12, 18 OR 24 INCHES
(305, 457, 610 MM)
1 INCH (25 MM) INSULATION
4 IN.
(102 MM)
ROOF OPENING
4 IN.
(102 MM)
Due to the varying airstreams encountered
in commercial ventilation, system designers
must be aware of national, state, and local
codes and guidelines governing these
installations. Local code authorities should
be consulted before proceeding with any
ventilation project.
CORRUGATED
ROOF DECK
CONCRETE
ROOF TRUSS
RECOMMENDED
DUCT & DAMPER SIZE
1 1/4 INCH (32 MM)
2 1/2 INCH (64 MM)
1 3/4 INCH
(44 MM)
2 1/2 INCH (64 MM)
4 INCH
(102 MM)
6 INCH x 3 INCH
(152 MM x 76 MM)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
4 INCH
(102 MM)
7
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Severe Duty Dimensions
LDP - SEVERE DUTY DIMENSIONS
B
C
D
E
A
A
LBP - SEVERE DUTY DIMENSIONS
C
B
D
E
A
A
Damper
Roof
Model
Number
Cover
Thickness
Louver
Thickness
Curb Cap
Thickness
A
B
C
D
E
Size
Opening Weight*
(square)
(square)
60
65
70
17
(432)
347⁄8
(886)
347⁄8
(886)
175⁄8
(448)
13⁄4
(44)
8
(203)
101⁄2
(267)
375
(170)
75
80
85
90
0.100
(0.045)
aluminum
0.125
(0.056)
aluminum
0.25
(0.113)
steel
LDP
19
(483)
367⁄8
(934)
367⁄8
(934)
175⁄8
(448)
13⁄4
(44)
10
(254)
121⁄2
(318)
400
(181)
95
100
120
22
(559)
397⁄8
(1013)
397⁄8
(1013)
195⁄8
(498)
13⁄4
(44)
12
(305)
141⁄2
(368)
425
(193)
22
(559)
397⁄8
(1013)
503⁄8
(1280)
181⁄8
(460)
13⁄4
(44)
12
(305)
101⁄2
(267)
550
(249)
10
14
18
21
24
30
26
(660)
437⁄8
(1114)
517⁄8
(1318)
181⁄8
(460)
13⁄4
(44)
16
(406)
101⁄2
(267)
550
(249)
101⁄2
(267)
550
(249)
0.100
(0.045)
aluminum
0.125
(0.056)
aluminum
0.25
(0.113)
steel
30
(762)
477⁄8
(1216)
577⁄8
(1470)
245⁄8
(625)
13⁄4
(44)
18
(457)
LBP
101⁄2
(267)
700
(318)
34
(864)
517⁄8
(1318)
617⁄8
(1572)
245⁄8
(625)
13⁄4
(44)
24
(610)
101⁄2
(267)
800
(363)
40
(1016)
577⁄8
(1470)
697⁄8
(1775)
271⁄4
(692)
13⁄4
(44)
30
(762)
101⁄2
(267)
950
(431)
All dimensions are in inches (millimeters). Weight in pounds (kilograms). *Weight shown is the largest cataloged Open Drip Proof motor.
8
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Severe Duty Curb
Installation Options
OUTSIDE CURB DIMENSION
1.75 INCH (44 MM)
THROAT DIMENSION
(ROOF OPENING)
1.75 INCH (44 MM)
Concrete
CURB HEIGHT
12, 18, OR 24 INCHES
(305, 457, or 610 MM)
1 INCH (25 MM) INSULATION
HILTI KB11, 3/8-16 X 3 ON
12 INCH (305 MM) MAXIMUM CENTERS.
MINIMUM TWO PER SIDE.
ROOF OPENING
2.5 INCH (57 MM)
EMBEDMENT
MINIMUM CONCRETE
STRENGTH OF 3000 PSI
2.25 INCH (57 MM) TYPICAL
4 INCH (102 MM) TYPICAL
1.75 INCH (44 MM)
4 INCH (102 MM)
MOUNTING FLANGE
TYPICAL
OUTSIDE FLANGE DIMENSION
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES (89 MM)
OUTSIDE CURB DIMENSION
THROAT DIMENSION
1.75 INCH (44 MM)
1.75 INCH (44 MM)
(ROOF OPENING)
Steel
CURB HEIGHT
12, 18, OR 24 INCHES
(305, 457, 610 MM)
CORNER TOP VIEW
1 INCH (25 MM) INSULATION
HILTI KWIK-FLEX 12-14 SCREW, NO. 3 POINT.
THREE (3) FASTENERS EACH CORNER AND
MAXIMUM OF 4.5 INCHES (114 mm) SPACING;
ADD ADDITIONAL FASTENERS TO SATISFY.
4 INCH (102 MM)
MOUNTING FLANGE
TYPICAL
ROOF OPENING
CORRUGATED
ROOF DECK
6 X 3 INCH (152 x 76 mm)
STEEL MOUNTING ANGLE
(12 GAUGE MINIMUM)
ROOF TRUSS
2.25 INCH (57 MM) TYPICAL
4 INCH (102 MM) TYPICAL
1.75 INCH (44 MM)
OUTSIDE FLANGE DIMENSION
THROAT DIMENSION AND ROOF OPENING EQUAL OUTSIDE CURB DIMENSION MINUS 3.5 INCHES (89 MM)
Model Number Code
The Model number system is designed to completely identify the fan. The correct code letters must be
specified to designate belt or direct drive. The remainder of the model number is determined by the size and
performance selected from the following pages.
LB - 30 - 7
Motor hp (Belt Drive only)
Model
6 = 1/6 10 = 1
4 = 1/4 15 = 11⁄2
3 = 1/3 20 = 2
5 = 1/2 30 = 3
7 = 3/4
50 = 5
LD - Fabra Hood Direct Drive
LB - Fabra Hood Belt Drive
LDP - Louvered Penthouse Direct Drive
LBP - Louvered Penthouse Belt Drive
75 = 71⁄2
100 = 10
150 = 15
Fan Size
Motor RPM (Direct Drive only)
A = 1725
LD/LDP 60 thru 120
LB/LBP 10 thru 54
B = 1140
C = 860
9
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LD/LDP 60-75
Direct Drive
Size 60 and 65
LD Dimensions
0.6
0.5
0.4
0.3
0.2
0.1
0.0
27
22
(559)
RPM
Density 0.075 lb/ft
140
120
100
80
131⁄2
3
(686)
(343)
13
(330)
60
2
(51)
13⁄4
(44)
17
(432)
17
(432)
40
20
0
0
50
100
150
cfm
250
200
250
300
LDP Dimensions
23
(584)
0
50
100
150
200
300
350
400
450
500
23
111⁄2
(292)
m3/hr
(584)
Size 70 and 75
131⁄2
(343)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
140
120
100
80
RPM
Density 0.075 lb/ft3
13⁄4
(44)
17
(432)
17
(432)
60
LD 60 thru LD 75 LDP 60 thru LDP 75
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness
Damper Size Square
Roof Opening Square
Weight*
24 ga
-
-
-
40
0.064 (0.029)
0.081 (0.036)
0.064 (0.029)
8 (203)
20
0.064 (0.029)
8 (203)
0
0
50
100
150
200
250
300
350
600
400
101⁄2 (267)
101⁄2 (267)
cfm
Galvanized, 37 (17) Aluminum, 49 (22)
0
100
200
300
400
500
m3/hr
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor. See page 8 for
severe duty LDP dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
Watts
0
0.1
171
4.3
0.125
164
4.3
0.2
139
4.0
0.25
119
3.8
0.3
97
0.375
0.4
0.45
0.5
CFM
Sones
CFM
202
4.8
274
5.6
LD/LDP-60
LD/LDP-65
1/60
1/30
1590* 51 W
1680* 70 W
3.6
165
5.1
245
5.3
238
5.2
208
5.0
187
5.1
129
5.1
112
5.2
Sones
CFM
Sones
CFM
360
6.4
324
6.0
314
5.9
282
5.5
257
5.4
231
5.3
188
5.2
171
5.1
132
5.0
LD/LDP-70
LD/LDP-75
1/30
1/25
1665* 73 W
1620* 79 W
400
5.8
360
5.2
351
5.1
317
4.9
290
4.7
264
4.5
222
4.2
206
4.1
168
4.0
122
3.8
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
10
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LD/LDP 80-95
Direct Drive
Size 80 and 85
LD Dimensions
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
27
RPM
Density 0.075 lb/ft3
28
160
140
120
100
80
131⁄2
(686)
(711)
(343)
16
(406)
4
(102)
13⁄4
(44)
60
19
(483)
19
(483)
40
20
0
0
100
200
300
cfm
400
500
800
600
LDP Dimensions
25
(635)
0
200
400
600
1000
25
121⁄2
m3/hr
(635)
(318)
Size 90 and 95
161⁄2
(419)
0.9
220
200
180
160
140
120
100
80
RPM
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Density 0.075 lb/ft3
13⁄4
(44)
19
(483)
19
(483)
LD 80 thru LD 95 LDP 80 thru LDP 95
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness
Damper Size Square
Roof Opening Square
Weight*
24 ga
-
-
-
60
0.064 (0.029)
0.081 (0.036)
0.064 (0.029)
10 (254)
40
20
0.064 (0.029)
10 (254)
121⁄2 (318)
0
0
200
400
600
800
1000
1200
121⁄2 (318)
cfm
Galvanized, 45 (20) Aluminum, 63 (29)
0
200
400
600
800 1000 1200 1400 1600 1800 2000
m3/hr
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor. See page 8 for
severe duty LDP dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
Watts
0
0.1
426
8.2
507
8.1
0.125
413
8.0
0.2
372
7.8
440
7.7
0.25
342
7.6
0.3
310
7.4
360
7.1
0.375
258
7.2
0.5
165
7.5
182
7.8
0.6
0.625
CFM
Sones
CFM
481
8.8
576
8.6
LD/LDP-80
LD/LDP-85
1/20
1/20
1550* 115 W
1500* 120 W
490
8.0
403
7.3
291
7.0
Sones
CFM
Sones
CFM
819
8.8
735
8.6
714
8.5
654
8.4
608
8.3
562
8.1
485
7.8
361
7.9
552
9.8
LD/LDP-90
LD/LDP-95
1/15
1/8
1550* 92 W
1550* 160 W
1052
965
11.2
942
11.1
870
10.8
825
10.4
780
10.2
695
10.0
430
396
Sones 11.8
10.1
10.2
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
11
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LD/LDP 100-120
Direct Drive
Size 100
LD Dimensions
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
27
30
(762)
RPM
Density 0.075 lb/ft3
250
200
150
100
50
131⁄2
(686)
(343)
18
(457)
4
(102)
13⁄4
(44)
22
(559)
22
(559)
0
0
200
400
600
800
cfm
1000
1200
2000
1400
1600
LDP Dimensions
28
(711)
0
500
1000
1500
m3/hr
2500
28
14
(711)
(356)
Size 120
181⁄2
1.2
RPM
Density 0.075 lb/ft3
(470)
250
200
150
100
50
1.0
0.8
0.6
0.4
0.2
0.0
13⁄4
(44)
22
(559)
22
(559)
LD 100 thru LD 120 LDP 100 thru LDP 120
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness
Damper Size Square
Roof Opening Square
Weight*
24 ga
-
-
-
0.064 (0.029)
0.081 (0.036)
0.064 (0.029)
12 (305)
0.064 (0.029)
12 (305)
0
0
200
400
600
800 1000 1200 1400 1600 1800 2000
cfm
141⁄2 (368)
Galvanized, 57 (26)
141⁄2 (368)
Aluminum, 82 (37)
0
500
1000
1500
m3/hr
2000
2500
3000
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor. See page 8 for
severe duty LDP dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
766
0.022
6.3
1016
0.051
12.0
1538
0.18
16.2
0.125
568
0.029
5.3
0.2
407
0.028
5.1
0.25
0.375
0.5
0.625
0.75
0.875
0.9
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
LD/LDP-100-C
LD/LDP-100-B
LD/LDP-100-A
1/8
1/6
1/4
860
1140
1725
879
780
709
0.068
10.4
1360
0.22
14.2
493
0.066
10.4
1256
0.23
14.3
0.065
11.0
1457
0.21
14.8
0.068
10.6
1399
0.22
14.4
1142
0.24
14.2
1024
0.24
14.8
891
0.23
15.3
724
0.23
15.9
678
0.22
16.1
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
921
0.03
6.6
1221
0.071
11.9
1848
0.25
21
702
0.041
5.3
1072
0.086
10.9
1762
0.28
19.6
536
0.043
5.1
LD/LDP-120-C
LD/LDP-120-B
LD/LDP-120-A
1/8
1/6
1/4
860
1140
1725
960
886
0.096
10.0
1652
0.29
19.3
664
0.099
9.2
1540
0.31
18.6
0.094
10.3
1693
0.29
19.4
1412
0.33
18.4
1286
0.34
18.2
1142
0.35
18.2
979
0.34
18.3
940
0.33
18.3
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
12
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LB/LBP 10
Belt Drive
LB Dimensions
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
39
RPM
28
(711)
171⁄4
HP
(991)
300
250
200
150
100
50
Density 0.075 lb/ft3
(438)
17
(432)
31⁄4
(85)
13⁄4
(44)
22
(559)
22
(559)
0
0
200
400
600
800
1000
1200
2000
1400
1600
LBP Dimensions
cfm
381⁄2
(978)
0
500
1000
1500
m3/hr
2500
28
(711)
14
(356)
LB-10
22 ga
-
-
LBP-10
-
0.064 (0.029)
0.081 (0.036)
17
(432)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
22
(559)
325⁄8
(829)
Damper Size Square
12 (305)
12 (305)
Roof Opening Square 141⁄2 (368)
141⁄2 (368)
Galvanized, Aluminum,
56 (25) 99 (45)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
539
0.013
3.0
639
0.021
3.6
841
0.048
5.1
942
0.067
5.9
1043
0.091
6.9
1144
0.12
8.0
1244
0.15
9.2
1346
0.19
10.0
1446
0.24
11.2
1516
0.28
12.2
1587
0.32
13.5
0.125
351
0.014
1.6
500
0.024
2.3
746
0.053
4.3
855
0.073
5.3
963
0.097
6.3
1070
0.13
7.5
1177
0.16
8.8
0.25
0.375
0.5
0.625
0.75
0.875
1
1.125
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3
MAX. BHP AT A GIVEN RPM - (rpm/2476)
MAXIMUM FRPM = 1767
TIP SPEED = rpm x 2.913
MAX. MOTOR FRAME SIZE = 56
600
712
623
0.054
3.6
759
0.076
4.7
887
0.103
5.9
1004
0.13
7.1
1114
0.17
8.4
1224
0.21
9.5
1331
0.26
10.7
1406
0.3
11.6
1480
0.34
12.6
937
625
0.075
4.2
1049
1162
1274
1386
1499
1611
1689
1767
780
0.103
5.4
618
0.099
4.7
LB/LBP-10-4
1/4
917
818
0.14
6.8
0.14
6.3
1047
0.18
8.2
953
0.18
7.9
861
0.17
7.3
1283
0.2
9.8
1168
0.22
9.3
1093
0.22
8.8
1006
0.22
8.3
910
0.22
7.8
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
1388
0.25
10.9
1461
0.29
11.9
1533
0.33
13.0
1280
0.27
10.4
1356
0.31
11.3
1432
0.35
12.2
1220
0.28
10.1
1304
0.32
11.0
1385
0.36
11.9
1142
0.28
9.5
1237
0.32
10.6
1327
0.36
11.7
1064
0.28
9.0
1158
0.32
9.9
1254
0.36
11.0
970
0.27
8.5
1087
0.32
9.5
1182
0.36
10.5
980
0.31
8.9
1112
0.36
10.1
LB/LBP-10-3
1/3
997
0.36
9.5
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
13
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LB/LBP 14
Belt Drive
LB Dimensions
1.2
1.0
0.8
0.6
0.4
0.2
0.0
RPM
39
35
(889)
HP
171⁄2
(991)
Density 0.075 lb/ft3
250
200
150
100
50
(445)
18
(457)
4
(102)
13⁄4
(44)
26
(660)
26
(660)
0
0
300
600
900
1200 1500 1800 2100 2400 2700
cfm
LBP Dimensions
40
0
1000
2000
m3/hr
3000
4000
32
(813)
16
(406)
(1016)
LB-14
22 ga
-
-
LBP-14
-
0.064 (0.029)
0.081 (0.036)
17
(432)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
26
(660)
Damper Size Square
16 (406)
16 (406)
26
(660)
Roof Opening Square 181⁄2 (470)
181⁄2 (470)
Galvanized, Aluminum,
81 (37) 116 (53)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
0.125
0.25
0.375
0.5
0.625
0.75
0.875
1
1.125
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
903
0.022
4.1
1061
0.035
4.7
1375
0.077
5.9
1533
0.11
6.7
1690
0.14
7.5
1847
0.19
8.5
2004
0.24
9.8
2102
0.27
10.7
2200
0.31
11.5
2364
0.39
12.9
2525
0.47
14.4
614
0.025
3.2
848
0.041
4.2
1231
0.086
5.6
1402
0.12
6.4
1574
0.15
7.3
1743
0.2
3
MAX. BHP AT A GIVEN RPM - (rpm/1639)
MAXIMUM FRPM = 1343
480
564
TIP SPEED = rpm x 3.829
MAX. MOTOR FRAME SIZE = 56
1024
0.089
5.1
1241
0.12
5.9
1439
0.16
6.9
1629
0.21
8
1807
0.26
9.4
1913
0.3
10.3
2019
0.34
11.1
2197
0.42
12.5
2372
0.51
13.8
731
1013
0.12
5.4
1264
0.17
6.4
1482
0.21
7.5
1681
0.27
8.9
LB/LBP-14-4
1/4
815
946
0.15
5.7
1297
0.21
7
1534
0.28
8.4
1672
0.32
9.3
1797
0.36
10.1
2002
0.44
11.6
2199
0.54
13.1
899
982
8.4
1912
0.25
9.7
1351
0.27
7.8
1066
1118
1170
1257
1343
2016
0.28
10.6
2120
0.32
11.3
2290
0.4
12.7
2456
0.49
14.1
1801
0.31
9.8
1512
0.32
8.7
1257
0.3
8.1
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
LB/LBP-14-3
LB/LBP-14-5
1/3
1/2
1920
0.36
10.6
2112
0.44
12.1
2289
0.53
13.5
1657
0.36
9.5
1487
0.36
9.0
1887
0.45
11.1
2092
0.55
12.6
1748
0.45
10.5
1979
0.55
12.2
1585
0.44
10.1
1848
0.55
11.6
1692
0.54
11.1
1386
0.51
10.4
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
14
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LB/LBP 18
Belt Drive
LB Dimensions
2.5
2.0
1.5
1.0
0.5
0.0
600
400
200
0
RPM
39
171⁄2
40
(1016)
HP
(991)
Density 0.075 lb/ft3
(445)
21
(533)
41⁄2
(114)
13⁄4
30
30
(762)
(44)
(762)
0
1000
2
2000
3000
cfm
4000
5000
6000
10
LBP Dimensions
46
0
4
6
8
36
(914)
m3/hr X 1000
(1168)
19
(483)
LB-18
22 ga
-
-
LBP-18
-
0.064 (0.029)
0.081 (0.036)
241⁄2
(622)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
30
Damper Size Square
18 (457)
18 (457)
30
(762)
Roof Opening Square 201⁄2 (521)
201⁄2 (521)
(762)
(44)
Galvanized, Aluminum,
135 (61) 179 (81)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Motor
Fan
Number
HP
RPM
0
0.125
0.25
0.5
0.75
1
1.25
1.5
1.75
2
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
1753
0.056
3.6
2119
0.099
4.9
2847
0.24
8.7
3115
0.31
10.2
3348
0.39
11.7
3578
0.48
13.4
4091
0.71
16.8
4302
0.83
18.0
4849
1.19
21
1422
0.064
2.7
1871
0.108
4.1
2671
0.25
7.9
2957
0.33
9.5
3
MAX. BHP AT A GIVEN RPM - (rpm/1157)
MAXIMUM FRPM = 1460
465
562
TIP SPEED = rpm x 4.843
1522
0.114
3.4
2474
0.27
7.4
2778
0.34
8.9
3039
0.42
10.4
3292
0.51
12.0
3847
0.75
15.5
4073
0.86
16.7
4648
1.22
19.8
4997
1.49
22
MAX. MOTOR FRAME SIZE = 145T
LB/LBP-18-4
1/4
1925
0.27
6.5
2324
0.36
8.0
2638
0.45
9.4
2936
0.54
11.0
3575
0.79
14.6
3814
0.91
15.9
4423
1.27
19.2
4790
1.54
21
755
LB/LBP-18-3
LB/LBP-18-5
1/3
1/2
826
3203
0.4
2110
0.44
8.7
888
11.0
3442
0.49
13.0
3972
0.73
16.2
4189
0.84
17.3
4749
1.2
2498
0.55
10.3
3218
0.82
13.4
3493
0.94
14.8
4183
1.32
18.5
4576
1.59
21
949
2822
0.82
12.9
LB/LBP-18-7
LB/LBP-18-10
3/4
1
1085
1141
1286
1375
1460
3140
0.96
14.1
3880
1.35
17.8
4311
1.63
20
2674
0.93
13.8
3568
1.37
17.4
4025
1.66
19.9
4446
1.98
22
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3208
1.35
17.1
3719
1.67
19.6
4176
2
20
LB/LBP-18-15
LB/LBP-18-20
11⁄2
5185
1.45
24
5505
1.73
26
5091
1.47
23
5417
1.76
25
3382
1.65
19.5
3874
2
5328
1.78
24
5138
1.83
23
4936
1.88
23
4714
1.93
22
3538
1.97
22
2
Sones
22
22
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
15
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LB/LBP 21
Belt Drive
LB Dimensions
2.0
1.5
1.0
0.5
0.0
51
RPM
43
(1092)
HP
23
(1295)
Density 0.075 lb/ft3
400
300
200
100
0
(584)
23
(584)
6
(152)
13⁄4
(44)
30
(762)
30
(762)
0
1000
2
2000
3000
4000
cfm
5000
6000
10
7000
12
8000
LBP Dimensions
0
4
6
8
46
36
(914)
m3/hr X 1000
19
(1168)
(483)
LB-21
22 ga
-
-
LBP-21
-
0.064 (0.029)
0.081 (0.036)
241⁄2
(622)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
30
Damper Size Square
18 (457)
18 (457)
30
(762)
Roof Opening Square 201⁄2 (521)
201⁄2 (521)
(762)
(44)
Galvanized, Aluminum,
145 (66) 191 (86)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Motor
Fan
Number
HP
RPM
0
0.25
0.375
0.5
0.625
0.75
1
1.25
1.5
1.75
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
2820
0.12
6.6
3609
0.24
8.8
1732
0.13
5.2
2938
0.28
7.8
3371
0.36
8.8
3724
0.44
9.9
4056
0.53
11.2
4424
0.65
12.9
4790
0.79
14.4
5087
0.91
15.4
5826
1.26
18.9
6260
1.52
21
3
465
595
MAX. BHP AT A GIVEN RPM - (rpm/910)
MAXIMUM FRPM = 1200
LB/LBP-21-4
LB/LBP-21-3
LB/LBP-21-5
1/4
TIP SPEED = rpm x 5.596
2457
0.28
6.9
2970
0.36
8.2
3362
0.45
9.3
3741
0.54
10.4
4157
0.66
11.8
4553
0.8
13.3
4858
0.93
14.5
5614
1.3
18.1
6068
1.56
20
6890
2.12
25
MAX. MOTOR FRAME SIZE = 145T
3948
0.32
10.1
4239
0.39
11.6
4531
0.48
13.4
4858
0.59
15.5
5186
0.72
16.7
5452
0.83
17.1
6126
1.18
20
2354
0.34
6.9
2954
0.45
8.6
3390
0.55
9.8
3833
0.67
11.3
4261
0.81
12.8
4602
0.94
13.9
5415
1.32
17.3
5877
1.59
19.4
6712
2.18
24
1/3
1/2
651
1964
0.38
7.1
2909
0.53
9.1
699
747
3491
0.68
10.8
3954
0.82
12.1
4313
0.95
13.4
5183
1.34
16.6
5691
1.61
18.8
6542
2.2
2937
0.64
10.1
3608
0.82
11.5
801
LB/LBP-21-7
LB/LBP-21-10
LB/LBP-21-15
LB/LBP-21-20
3/4
1
855
4019
0.96
12.7
4926
1.35
16.2
5451
1.62
18.2
6375
2.22
23
2894
0.86
11.7
4386
1.36
15.0
4965
1.65
17.3
5954
2.25
22
899
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3369
1.24
14.0
4395
1.63
16.4
5517
2.28
21
1010
1077
1200
11⁄2
6532
1.43
22
7278
1.98
26
7034
2.07
25
5013
2.26
20
4122
2.11
18.5
2
Sones
23
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
16
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LB/LBP 24
Belt Drive
LB Dimensions
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
51
RPM
451⁄2
(1156)
350
300
250
200
150
100
50
HP
201⁄2
(1295)
Density 0.075 lb/ft3
(521)
231⁄2
(597)
63⁄4
(171)
13⁄4
34
34
(864)
(44)
(864)
0
0
1000 2000 3000 4000 5000 6000 7000 8000 9000
cfm
LBP Dimensions
491⁄2
(1257)
0
2
4
6
8
10
12
14
40
(1016)
m3/hr X 1000
20
(508)
LB-24
22 ga
-
-
LBP-24
-
0.064 (0.029)
0.081 (0.036)
231⁄2
(597)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
34
(864)
Damper Size Square
24 (610)
24 (610)
34
(864)
Roof Opening Square 261⁄2 (673)
261⁄2 (673)
Galvanized, Aluminum,
188 (85) 239 (108)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
0.25
0.375
0.5
0.625
0.75
0.875
1
1.25
1.375
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3419
0.11
5.8
3938
0.17
6.3
4449
0.24
7.4
4892
0.32
8.5
5604
0.48
10.7
6018
0.59
12.4
6423
0.72
14.1
7068
0.96
17.0
7578
1.18
19.6
8358
1.58
24
3
MAX. BHP AT A GIVEN RPM - (rpm/710)
MAXIMUM FRPM = 910
355
409
462
508
582
625
667
734
787
868
910
TIP SPEED = rpm x 6.414
2715
0.19
5.1
3451
0.28
6.3
4043
0.36
7.4
4917
0.54
9.4
5381
0.66
11.0
5828
0.8
12.7
6531
1.05
15.3
7080
1.29
17.4
7907
1.7
MAX. MOTOR FRAME SIZE = 145T
LB/LBP-24-4
1/4
2491
0.25
5.3
3433
0.36
6.8
4441
0.55
8.9
4988
0.68
10.3
5505
0.82
12.0
6252
1.08
14.6
6820
1.32
16.5
7675
1.74
20
LB/LBP-24-3
LB/LBP-24-5
1/3
1/2
3899
0.55
8.4
4497
0.68
10.0
5062
0.83
11.5
5912
1.1
13.9
6560
1.35
15.9
7440
1.78
19.4
7889
2.04
21
3929
0.66
9.5
4589
0.83
11.1
5503
1.1
13.5
6190
1.36
15.4
7192
1.81
18.9
7664
2.07
21
LB/LBP-24-7
3/4
3984
0.79
10.9
5073
1.1
4555
1.07
12.9
5398
1.36
14.8
6505
1.83
17.9
7056
2.1
LB/LBP-24-10
LB/LBP-24-15
1
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
13.2
5799
1.36
15.0
6855
1.82
18.3
7377
2.09
20
4909
1.32
14.1
6141
1.82
17.6
6713
2.1
11⁄2
5285
1.76
16.0
5995
2.08
18.4
21
LB/LBP-24-20
2
8763
1.82
27
8333
1.95
24
8114
2
23
5537
2.03
17.2
Sones
19.8
19.5
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
17
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LB/LBP 30
Belt Drive
LB Dimensions
2.0
1.5
1.0
0.5
0.0
63
RPM
50
(1270)
291⁄2
HP
(1600)
Density 0.075 lb/ft3
(749)
400
300
200
100
0
265⁄8
(676)
81⁄2
(216)
13⁄4
(44)
40
(1016)
40
(1016)
0
2
4
6
8
10
12
14
16
LBP Dimensions
cfm X 1000
15
m3/hr X 1000
58
46
(1168)
0
5
10
20
25
(1473)
23
(584)
LB-30
22 ga
-
-
LBP-30
-
0.064 (0.029)
0.081 (0.036)
261⁄2
(673)
Hood Thickness
Cover Thickness
Louver Thickness
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
Damper Size Square
30 (762)
30 (762)
40
(1016)
40
(1016)
Roof Opening Square 321⁄2 (826)
321⁄2 (826)
Galvanized, Aluminum,
249 (113) 318 (144)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
0.25
0.375
0.5
0.625
0.75
1
1.25
1.5
1.75
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3910
0.076
8.0
6221
0.31
8.7
6697
0.38
9.0
7156
0.47
9.7
8210
0.7
12.0
8992
0.92
13.8
9638
1.14
15.3
10284
1.38
16.8
3
230
366
394
421
483
529
567
605
667
703
835
MAX. BHP AT A GIVEN RPM - (rpm/512)
MAXIMUM FRPM = 835
LB/LBP-30-3
LB/LBP-30-5
1/3
1/2
TIP SPEED = rpm x 7.985
4729
0.37
5.9
5354
0.45
6.5
5939
0.54
7.4
7196
0.8
10.7
8079
1.04
12.9
8797
1.27
14.2
9507
1.53
15.7
MAX. MOTOR FRAME SIZE = 184T
4290
0.44
6.0
5076
0.55
6.7
6567
0.83
9.7
7559
1.07
12.1
8334
1.31
13.6
9073
1.57
15.2
5777
0.83
8.8
6946
1.1
11.4
7786
1.34
13.0
8605
1.61
14.6
9863
2.12
17.5
LB/LBP-30-7
LB/LBP-30-10
3/4
1
6162
1.09
10.3
7174
1.36
12.3
8068
1.64
14.1
9419
2.16
17.1
6410
1.33
11.2
7434
1.64
13.3
LB/LBP-30-15
11⁄2
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
11338 10639 10257
1.85
19.8
11950 11287 10935 10562 10184
2.17
22
14194 13635 13356 13062 12747 12432 11728 10951
3.63
27
8933
2.19
16.6
9722
2.54
18.3
7737
2.17
14.9
8701
2.57
17.0
LB/LBP-30-20
LB/LBP-30-30
LB/LBP-30-50
2
3
5
2.02
18.6
2.07
17.9
7032
2.41
14.2
2.34
20
2.41
19.5
2.46
19.1
2.51
18.7
9965
4.29
21
8478
4.06
18.2
3.84
26
3.95
25
4.03
25
4.09
24
4.14
24
4.24
23
4.33
22
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
18
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LB/LBP 36
Belt Drive
LB Dimensions
2.0
1.5
1.0
0.5
0.0
63
RPM
60
(1524)
HP
27
(686)
(1600)
Density 0.075 lb/ft3
400
300
200
100
0
325⁄8
(829)
93⁄4
(248)
13⁄4
(44)
46
(1168)
46
(1168)
0
2
4
6
8
10
cfm X 1000
20
12
14
16
18
20
LBP Dimensions
0
10
30
63
(1600)
513⁄4
(1314)
m3/hr X 1000
26
(660)
LB-36
0.064 (0.029)
LBP-36
-
0.064 (0.029)
0.081 (0.036)
343⁄8
(873)
Hood Thickness
Cover Thickness
Louver Thickness
-
-
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
46
(1168)
Damper Size Square
36 (914)
36 (914)
46
(1168)
Roof Opening Square 381⁄2 (978)
381⁄2 (978)
Galvanized, Aluminum,
338 (153) 444 (201)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
0.25
0.375
0.5
0.625
0.75
0.875
1
1.25
1.5
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
6204
0.16
4.9
8884
0.47
8.2
10153
0.7
10.6
11196
0.94
13.7
12014 10765
1.16
14.8
3
MAX. BHP AT A GIVEN RPM - (rpm/384)
MAXIMUM FRPM = 678
220
315
360
397
426
454
499
536
572
614
678
LB/LBP-36-5
1/2
TIP SPEED = rpm x 9.425
6937
0.55
6.3
8570
0.81
8.9
9816
1.08
12.1
MAX. MOTOR FRAME SIZE = 184T
7487
0.83
7.9
8911
1.1
10.6
9964
1.35
12.7
LB/LBP-36-7
LB/LBP-36-10
3/4
1
7775
1.1
9.4
9056
1.37
11.6
7716
1.34
10.1
9209
1.66
12.5
1.32
14.0
LB/LBP-36-15
LB/LBP-36-20
LB/LBP-36-30
11⁄2
12804 11668 10949 10127
1.41
16.0
14073 13064 12442 11760 11004 10173
1.87
18.2
15116 14196 13646 13037 12361 11652 10837
2.31
20
16132 15287 14790 14229 13649 12989 12313 11534
2.81
22
17316 16540 16087 15598 15066 14504 13890 13262 11584
3.48
25
19121 18419 18041 17621 17165 16683 16192 15636 14494 12970
4.69
30
7552
1.57
11.0
1.58
15.4
1.63
14.5
1.65
13.7
8773
2.12
13.9
2
2.06
17.6
2.13
17.2
2.17
16.6
2.2
16.1
2.2
15.1
9559
2.65
15.8
2.52
19.7
2.61
19.3
2.67
18.7
2.7
18.4
2.73
17.8
2.72
16.7
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
3
3.04
22
3.14
21
3.21
21
3.26
20
3.29
19.9
3.32
19.0
3.31
18.1
3.72
24
3.84
24
3.93
24
3.99
23
4.05
23
4.08
22
4.1
21
4.04
19.2
LB/LBP-36-50
5
4.95
29
5.08
29
5.21
29
5.3
28
5.37
27
5.44
27
5.47
26
5.52
24
5.45
22
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
19
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LB/LBP 42
Belt Drive
LB Dimensions
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
75
RPM
705⁄8
(1794)
331⁄2
HP
(1905)
Density 0.075 lb/ft3
(851)
300
200
100
0
373⁄8
(949)
111⁄2
(292)
13⁄4
(44)
52
(1321)
52
(1321)
0
2
4
6
8
10
12
14
16
18
20
22
24
LBP Dimensions
cfm X 1000
20
m3/hr X 1000
701⁄2
0
10
30
40
58
(1473)
(1791)
29
(737)
LB-42
0.064 (0.029)
LBP-42
-
0.064 (0.029)
0.081 (0.036)
381⁄4
(972)
Hood Thickness
Cover Thickness
Louver Thickness
-
-
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
52
(1321)
Damper Size Square
42 (1067)
42 (1067)
52
(1321)
Roof Opening Square 441⁄2 (1130)
441⁄2 (1130)
Galvanized, Aluminum,
396 (180) 530 (240)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
Model
Number
Motor
HP
Fan
RPM
0
8328
0.21
5.2
10827
0.47
6.9
12405 11362
0.71
8.3
0.125
6455
0.25
4.3
9583
0.53
6.0
0.25
0.375
0.5
0.625
0.75
0.875
1
1.25
CFM
3
MAX. BHP AT A GIVEN RPM - (rpm/301)
MAXIMUM FRPM = 515
TIP SPEED = rpm x 11.061
MAX. MOTOR FRAME SIZE = 184T
190
247
283
311
334
356
392
420
448
482
515
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
LB/LBP-42-5
1/2
7772
0.55
5.5
9965
0.83
7.1
7932
0.81
6.5
LB/LBP-42-7
LB/LBP-42-10
3/4
1
0.78
7.6
13632 12718 11521 10057
0.94
9.8
1.02
9.3
1.08
8.7
1.1
8.3
14640 13812 12766 11480
9795
1.35
9.2
1.17
11.5
1.25
11.0
1.33
10.4
1.37
9.8
LB/LBP-42-15
LB/LBP-42-20
LB/LBP-42-30
11⁄2
15605 14828 13887 12733 11417
9401
1.59
10.3
1.41
13.2
1.5
12.7
1.58
12.1
1.64
11.5
1.66
10.8
17183 16477 15667 14715 13626 12382 10481
2
1.89
16.1
1.98
15.5
2.08
14.9
2.16
14.3
2.21
13.7
2.21
13.2
2.13
12.9
18410 17751 17030 16205 15201 14135 12945 11013
2.32
18.6
2.42
18.0
2.52
17.3
2.62
16.6
2.68
16.1
2.72
15.4
2.72
15.3
2.61
15.2
3
19637 19020 18378 17605 16740 15786 14735 13494
2.82
22
2.93
21
3.04
20
3.14
19.4
3.22
18.8
3.28
18.1
3.3
17.5
3.28
17.6
Sones
CFM
BHP
Sones
CFM
BHP
21128 20554 19980 19281 18562 17683 16796 15798 14692
3.51
23
3.63
23
3.74
22
3.86
22
3.97
21
4.04
20
4.1
19.3
4.11
18.7
4.09
18.5
LB/LBP-42-50
5
22574 22037 21500 20887 20214 19480 18651 17822 16871 14331
4.28
25
4.41
24
4.53
24
4.65
24
4.77
23
4.87
22
4.94
21
5.01
21
5.01
20
4.88
19.3
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
20
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LB/LBP 48
Belt Drive
LB Dimensions
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
87
703⁄8
(1788)
RPM
HP
41
(2210)
300
250
200
150
100
50
Density 0.075 lb/ft3
(1041)
411⁄2
(1054)
115⁄8
(295)
13⁄4
(44)
58
(1473)
58
(1473)
0
0
4
8
12
16
20
24
28
LBP Dimensions
cfm X 1000
20
761⁄2
0
10
30
40
64
(1626)
m3/hr X 1000
(1943)
32
(813)
LB-48
0.064 (0.029)
LBP-48
-
0.064 (0.029)
0.081 (0.036)
403⁄8
(1026)
Hood Thickness
Cover Thickness
Louver Thickness
-
-
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
Damper Size Square
48 (1219)
48 (1219)
58
(1473)
58
(1473)
Roof Opening Square 501⁄2 (1283)
501⁄2 (1283)
Galvanized, Aluminum,
430 (195) 579 (263)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
0.375 0.5 0.625 0.75
Model
Number
Motor
HP
Fan
RPM
0
0.125
6546
0.24
5.4
8948
0.38
5.6
0.25
0.875
0.9
1
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
9666
0.21
6.1
11277
0.34
6.9
12824 10846
0.5
7.6
3
MAX. BHP AT A GIVEN RPM - (rpm/241)
MAXIMUM FRPM = 420
TIP SPEED = rpm x 12.632
MAX. MOTOR FRAME SIZE = 213T
150
175
199
226
249
267
285
314
359
381
420
LB/LBP-48-5
1/2
7629
0.54
7.0
0.56
6.8
14563 12863 10741
0.73
8.5
LB/LBP-48-7
LB/LBP-48-10
3/4
1
0.81
8.2
0.83
7.5
16046 14530 12787 10092
0.98
9.5
1.07
9.4
1.1
9.2
1.08
8.3
17205 15823 14222 12151
1.2
10.6
1.31
10.4
1.35
10.2
1.36
9.2
LB/LBP-48-15
11⁄2
18365 17103 15612 13896 11357
1.46
12.3
1.58
11.7
1.63
11.1
1.66
10.5
1.61
9.6
20234 19141 17779 16397 14665 11934
LB/LBP-48-20
LB/LBP-48-30
2
3
1.96
15.4
2.1
14.5
2.17
13.4
2.2
12.5
2.22
12.2
2.1
11.5
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
23134 22214 21041 19878 18650 17134 15069 11596
2.93
18.4
3.1
17.8
3.21
17.2
3.25
16.5
3.29
15.9
3.31
15.5
3.25
14.8
2.84
13.4
24552 23685 22620 21512 20378 19104 17564 15491 15076
3.5
20
3.68
19.6
3.81
19.1
3.87
18.6
3.92
17.9
3.95
17.4
3.95
17.1
3.86
16.2
3.85
16.0
LB/LBP-48-50
5
27065 26278 25383 24354 23363 22317 21159 19839 19534 18029
4.69
23
4.89
23
5.05
23
5.15
23
5.21
22
5.25
22
5.29
21
5.31
21
5.3
21
5.23
20
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
21
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LB/LBP 54
Belt Drive
LB Dimensions
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
87
38
RPM
791⁄2
(2019)
HP
(2210)
300
250
200
150
100
50
Density 0.075 lb/ft3
(965)
453⁄8
(1153)
121⁄2
(318)
13⁄4
(44)
64
(1626)
64
(1626)
0
0
5
10
15
20
25
30
35
60
40
LBP Dimensions
cfm X 1000
831⁄2
0
10
20
30
40
50
70
(1778)
(2121)
m3/hr X 1000
35
(889)
LB-54
0.064 (0.029)
LBP-54
-
0.064 (0.029)
0.081 (0.036)
435⁄8
(1108)
Hood Thickness
Cover Thickness
Louver Thickness
-
-
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
13⁄4
(44)
Damper Size Square
54 (1372)
54 (1372)
64
(1626)
64
(1626)
Roof Opening Square 561⁄2 (1435)
561⁄2 (1435)
Galvanized, Aluminum,
596 (270) 780 (354)
Weight*
All dimensions are in inches (millimeters). Weight in pounds
(kilograms). *Weight shown is the largest cataloged
Open Drip Proof motor. See page 8 for severe duty LBP
dimensions.
CFM / Static Pressure in Inches wg
0.375 0.5 0.625 0.75
Model
Number
Motor
HP
Fan
RPM
0
0.125
0.25
0.875
1
1.125
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
12159
0.25
4.6
14497 11186
0.42
5.8
19267 17356 13895
0.99
8.7
21980 20319 17983 14194
1.47
11.2
24131 22628 20831 17904
1.95
12.1
25908 24517 22962 20554 17326
2.41
14.1
27685 26383 25030 23122 20394 16072
2.94
17.6
30210 29017 27789 26305 24165 21535 17215
3.82
19.3
3
MAX. BHP AT A GIVEN RPM - (rpm/198)
MAXIMUM FRPM = 401
130
155
206
235
258
277
296
323
350
376
401
TIP SPEED = rpm x 14.137
MAX. MOTOR FRAME SIZE = 213T
LB/LBP-54-10
1
0.48
4.9
1.1
8.5
1.12
8.7
LB/LBP-54-15
LB/LBP-54-20
11⁄2
2
1.6
11.2
1.66
11.3
1.6
11.7
2.09
12.5
2.18
13.0
2.21
13.3
2.57
13.4
2.68
14.1
2.72
14.4
2.65
13.7
LB/LBP-54-30
LB/LBP-54-50
LB/LBP-54-75
3
5
3.11
15.5
3.25
15.2
3.31
16.0
3.34
15.1
3.1
13.1
4.01
17.8
4.17
17.3
4.27
18.4
4.31
18.3
4.29
16.8
4.01
14.7
Sones
CFM
BHP
Sones
CFM
BHP
Sones
CFM
BHP
32736 31634 30514 29312 27766 25487 22974 18944
4.87
18.9
35167 34142 33111 32039 30716 29030 26889 24483 20824
6.03
22
37506 36544 35583 34583 33500 32150 30332 28324 26018 22767
7.32
25
5.06
19.5
5.25
20
5.39
21
5.46
22
5.5
21
5.43
19.0
5.13
17.8
6.25
23
6.45
23
6.62
24
6.72
25
6.79
26
6.82
24
6.71
22
6.4
21
71⁄2
7.54
26
7.77
26
7.96
27
8.11
28
8.19
29
8.24
29
8.29
27
8.13
26
7.81
24
Sones
Performance certified is for installation type A: Free inlet, Free outlet. Power rating (Bhp) does not include transmission losses. Performance ratings include the effects of a
birdscreen in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
22
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Specifications
Direct Drive Specifications
The LD and LDP exhaust fans shall be direct drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances. Wheels shall be statically and dynamically balanced. The fan shall be
constructed of heavy gauge steel or aluminum with a rigid internal support structure and a birdscreen.
Motors shall be mounted on vibration isolators. Motors shall be readily accessible for maintenance.
A disconnect switch shall be factory installed and wired from the fan motor to a junction box within
the motor compartment. A conduit chase shall be provided through the curb cap to the motor
compartment for ease of electrical wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing the
model number and individual serial number for future identification.
Fans shall be models LD or LDP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
BELT DRIVE SPECIFICATIONS
The LB and LBP exhaust fans shall be belt drive type. The fan wheel shall be centrifugal backward
inclined, constructed of aluminum and shall include a wheel cone carefully matched to the fan’s venturi
for precise running tolerances.
Wheels shall be statically and dynamically balanced. The fan shall be constructed of heavy gauge steel
or aluminum with a rigid internal support structure and birdscreen.
Motors shall be heavy duty ball bearing type, carefully matched to the fan load, and furnished at the
specified voltage, phase and enclosure. Drive frame assembly shall be constructed of heavy gauge
steel. Motors and drives shall be mounted on vibration isolators. Motors and drives shall be readily
accessible for maintenance.
Precision ground and polished fan shafts shall be mounted in permanently sealed, lubricated pillow
block ball bearings. Bearings shall be selected for a minimum L life in excess of 100,000 hours
10
(L average of 500,000 hours) at maximum cataloged operating speed. Drives shall be sized for a
50
minimum of 150% of driven horsepower. Pulleys shall be of the cast type, keyed and securely attached
to the wheel and motor shafts.
Motor pulleys shall be adjustable for final system balancing. A disconnect switch shall be factory
installed and wired from the fan motor to a junction box installed within the motor compartment. A
conduit chase shall be provided through the base to the motor compartment for ease of electrical
wiring.
All fans shall bear the AMCA Certified Ratings Seal for sound and air performance.
Each fan shall bear a permanently affixed manufacturer’s engraved aluminum nameplate containing the
model number and individual serial number for future identification.
Fans shall be models LB or LBP as manufactured by Greenheck Fan Corporation in Schofield,
Wisconsin, USA.
23
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Other Exhaust Fans
Models G and GB, direct or belt drive, spun aluminum downblast
centrifugal roof exhaust fans are an economical means of exhausting air.
They utilize a backward inclined wheel and are available in 45 different
sizes. Performance capacities range up to 3.25 in. wg (810 Pa) of static
pressure and from 50 to 44,700 cfm (85 to 75,900 m3/hr).
Series C models CUE, CUBE, CW and CWB, are commonly used for
general clean air, mild grease and fume hood exhaust applications. Both
roof upblast and sidewall configurations are specifically designed to
discharge air directly away from the mounting surface. These models are
constructed of aluminum and use an aluminum backward inclined wheel.
They are UL/cUL Listed for electrical or grease. Performance capacities
ranges up to 5 in. wg (1242 Pa) and up to 30,000 cfm (51,000 m3/hr).
Model SWB centrifugal backward inclined belt driven utility fans are designed
for supply, exhaust and return air applications requiring higher discharge
velocities and high static pressures. The SWB Series 100 is for general clean air
applications. The SWB Series 200 fans are constructed with heavy gauge steel.
Designed for light industrial duty and grease applications, it’s capacities range
from 70 to 27,000 cfm (120 to 45,900 m3/hr) and up to 5 in. wg (1,118 Pa) of
static pressure. SWB fans can be mounted indoors or outdoors.
Models NYD and NYB, direct or belt drive, tamper resistant centrifugal roof
exhaust fans are galvanized construction and prevent entry into the unit
and/or building. They utilize a backward inclined wheel and are available in
10 different sizes. Performance capacities range from 170 to 8,080 cfm (290
to 13,700 m3/hr) and up to 1 in. wg (249 Pa) of static pressure.
Building Value in Air
Greenheck delivers value
to mechanical engineers by
helping them solve virtually
any air quality challenges
their clients face with a
top quality, innovative air-
related equipment. We offer
extra value to contractors
by providing easy-to-install,
competitively priced, reliable
products that arrive on time.
And building owners and
occupants value the energy
efficiency, low maintenance
and quiet dependable operation
they experience long after the
construction project ends.
comprehensive selection of
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the purchase date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
Prepared to Support
Green Building Efforts
Catalog Series L Rev 4 April 2008 R
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
Copyright © 2008 Greenheck Fan Corp.
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