425T Panel
4-Ply Polyester Panel Filter
For use as a pre-filter
The 425T panels are manufactured from
two distinct 100% resin bonded polyester
media layers with a wire support frame
sealed between the two layers. This
provides a self-supportive, self-sealing
panel filter which significantly decreases
air bypass when installed in the entire fil-
ter track.
The first layer is a 1.5” polyester media
which uses 45 denier polyester fibers
with an open weave on the entry side, 15
denier fibers with slightly tighter weave in
the middle, and 6 denier fibers with an
even tighter weave on the downstream
side. This triple denier entry media com-
bination provides three stages of filtration against particulate. The downstream side of
the media is treated with a special non-migrating tackifier which significantly increases
the filter’s efficiency. The second media layer is made from 6 denier polyester fibers
heavily needled to a dense 1/4” depth. This adds a final layer of defense against
small particulate.
The progressive density media structure is what makes the 325T panel so effective.
The particles are “funneled” out of the airstream. Large particles are captured on the
outer layer and finer particles are captured in the second and third layers.
Test Type
Fractional Efficiency
T033103B
425T panel filters are available as single panels with one single wire sup-
Test Number
port covering the entire filter area, or link panels utilizing multiple wire sup-
Flow Rate/Velocity
1968 cfm
Test Aerosol:
DP (”H20)
Size
KCI Neutralized
0.489
port pieces inside a single piece of media. Both the single panels and the
link panels are available in custom sizes.
24x24 panel
Initial
Size
Fractional
Range (mm)
Efficiency (%)
Fractional Efficiency vs. Particle Diameter
100
0.3-0.4
0.4-0.55
0.55-0.7
0.7-1.0
1.0-1.3
1.3-1.6
1.6-2.2
2.2-3.0
3.0-4.0
4.0-5.5
5.5-7.0
7.0-10.0
2.3
9.6
80
60
40
20
0
19.7
34.0
46.9
53.4
60.3
68.5
77.0
82.3
86.0
90.1
0
1
10
Particle Diameter (µm)
110
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
PA0873
PA0874
PA0875
PA0876
PA0877
PA0878
425RT-2016C
425RT-2020C
425RT-2024C
425RT-2025C
425RT-2412C
425RT-2415C
20X16 425T CONTINUOUS LINK
20X20 425T CONTINUOUS LINK
20X24 425T CONTINUOUS LINK
20X25 425T CONTINUOUS LINK
24X12 425T CONTINUOUS LINK
24X15 425T CONTINUOUS LINK
24
24
24
24
24
24
PA0879
PA0880
PA0881
425RT-2416C
425RT-2418C
425RT-2420C
24X16 425T CONTINUOUS LINK
24X18 425T CONTINUOUS LINK
24X20 425T CONTINUOUS LINK
24
24
24
PA0882
PA0883
PA0884
PA0885
425RT-2424C
425RT-2516C
425RT-2520C
425RT-2525C
24X24 425T CONTINUOUS LINK
25X16 425T CONTINUOUS LINK
25X20 425T CONTINUOUS LINK
25X25 425T CONTINUOUS LINK
24
24
24
24
425T Standard Link Panels
PA0702
PA0703
PA0704
PA0705
425LT-1248-24
12X48 RING PANEL 425T LINK
12X72 RING PANEL 425T LINK
12X96 RING PANEL 425T LINK
12X120 RING PANEL 425T LINK
12
8
425LT-1272-24
425LT-1296-24
425LT-12120-24
6
4
PA0706
PA0707
PA0708
PA0709
425LT-12144-24
425LT-1540-20
425LT-1548-24
425LT-1560-20
12X144 RING PANEL 425T LINK
15X40 RING PANEL 425T LINK
15X48 RING PANEL 425T LINK
15X60 RING PANEL 425T LINK
4
12
12
8
PA0710
PA0711
PA0712
PA0713
425LT-1572-24
425LT-1580-20
425LT-1596-24
425LT-15100-20
15X72 RING PANEL 425T LINK
15X80 RING PANEL 425T LINK
15X96 RING PANEL 425T LINK
15X100 RING PANEL 425T LINK
8
6
6
4
PA0714
PA0715
PA0716
PA0717
425LT-15120-20
425LT-15120-24
425LT-15144-24
425LT-1632-16
15X120 RING PANEL 425T LINK
15X120 RING PANEL 425T LINK
15X144 RING PANEL 425T LINK
16X32 RING PANEL 425T LINK
4
4
4
12
PA0718
PA0719
PA0720
PA0721
425LT-1636-18
425LT-1640-20
425LT-1648-24
425LT-1650-25
16X36 RING PANEL 425T LINK
16X40 RING PANEL 425T LINK
16X48 RING PANEL 425T LINK
16X50 RING PANEL 425T LINK
12
12
12
12
PA0722
425LT-1654-18
16X54 RING PANEL 425T LINK
8
112
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
PA0723
PA0724
PA0725
425LT-1660-20
425LT-1664-16
425LT-1672-18
16X60 RING PANEL 425T LINK
16X64 RING PANEL 425T LINK
16X72 RING PANEL 425T LINK
8
6
6
PA0726
PA0727
PA0728
PA0729
PA0730
PA0731
PA0732
PA0733
425LT-1672-24
425LT-1675-25
425LT-1680-20
425LT-1696-24
425LT-16100-20
425LT-16100-25
425LT-16120-20
425LT-16120-24
16X72 RING PANEL 425T LINK
16X75 RING PANEL 425T LINK
16X80 RING PANEL 425T LINK
16X96 RING PANEL 425T LINK
16X100 RING PANEL 425T LINK
16X100 RING PANEL 425T LINK
16X120 RING PANEL 425T LINK
16X120 RING PANEL 425T LINK
8
8
6
6
4
6
4
4
PA0734
PA0735
PA0736
PA0737
425LT-16125-25
425LT-16140-20
425LT-16144-24
425LT-16150-25
16X125 RING PANEL 425T LINK
16X140 RING PANEL 425T LINK
16X144 RING PANEL 425T LINK
16X150 RING PANEL 425T LINK
4
3
4
4
PA0738
PA0739
PA0740
PA0741
425LT-1832-16
425LT-1848-16
425LT-1848-24
425LT-1864-16
18X32 RING PANEL 425T LINK
18X48 RING PANEL 425T LINK
18X48 RING PANEL 425T LINK
18X64 RING PANEL 425T LINK
12
8
12
6
PA0742
PA0743
PA0744
PA0745
425LT-1872-24
425LT-1880-16
425LT-1896-16
425LT-1896-24
18X72 RING PANEL 425T LINK
18X80 RING PANEL 425T LINK
18X96 RING PANEL 425T LINK
18X96 RING PANEL 425T LINK
6
4
4
6
PA0746
PA0747
PA0748
PA0749
425LT-18120-24
425LT-18144-24
425LT-2032-16
425LT-2040-20
18X120 RING PANEL 425T LINK
18X144 RING PANEL 425T LINK
20X32 RING PANEL 425T LINK
20X40 RING PANEL 425T LINK
4
4
12
12
PA0750
PA0751
PA0752
PA0753
425LT-2045-15
425LT-2048-16
425LT-2048-24
425LT-2050-25
20X45 RING PANEL 425T LINK
20X48 RING PANEL 425T LINK
20X48 RING PANEL 425T LINK
20X50 RING PANEL 425T LINK
8
12
8
12
PA0754
PA0755
PA0756
PA0758
425LT-2060-15
425LT-2060-20
425LT-2064-16
425LT-2072-24
20X60 RING PANEL 425T LINK
20X60 RING PANEL 425T LINK
20X64 RING PANEL 425T LINK
20X72 RING PANEL 425T LINK
6
8
6
8
113
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
PA0757
PA0759
PA0760
PA0761
425LT-2072-24-6
425LT-2075-25
425LT-2080-16
425LT-2080-20
20X72 RING PANEL 425T LINK
20X75 RING PANEL 425T LINK
20X80 RING PANEL 425T LINK
20X80 RING PANEL 425T LINK
6
8
4
6
PA0762
PA0763
PA0764
PA0765
425LT-2090-15
425LT-2096-16
425LT-2096-24
425LT-20100-20
20X90 RING PANEL 425T LINK
20X96 RING PANEL 425T LINK
20X96 RING PANEL 425T LINK
20X100 RING PANEL 425T LINK
4
4
6
4
PA0766
PA0767
PA0768
PA0769
425LT-20105-15
425LT-20112-16
425LT-20120-15
425LT-20120-20
20X105 RING PANEL 425T LINK
20X112 RING PANEL 425T LINK
20X120 RING PANEL 425T LINK
20X120 RING PANEL 425T LINK
3
3
3
4
PA0770
PA0771
PA0772
PA0773
425LT-20120-24
425LT-20125-25
425LT-20140-20
425LT-20144-24
20X120 RING PANEL 425T LINK
20X125 RING PANEL 425T LINK
20X140 RING PANEL 425T LINK
20X144 RING PANEL 425T LINK
4
4
3
4
PA0774
PA0775
PA0776
PA0777
425LT-20150-25
425LT-2430-15
425LT-2432-16
425LT-2436-12
20X150 RING PANEL 425T LINK
24X30 RING PANEL 425T LINK
24X32 RING PANEL 425T LINK
24X36 RING PANEL 425T LINK
4
12
12
8
PA0778
PA0779
PA0780
PA0781
425LT-2436-18
425LT-2440-20
425LT-2445-15
425LT-2448-16
24X36 RING PANEL 425T LINK
24X40 RING PANEL 425T LINK
24X45 RING PANEL 425T LINK
24X48 RING PANEL 425T LINK
12
12
8
8
PA0782
PA0783
PA0784
PA0785
425LT-2448-24
425LT-2454-18
425LT-2460-15
425LT-2460-20
24X48 RING PANEL 425T LINK
24X54 RING PANEL 425T LINK
24X60 RING PANEL 425T LINK
24X60 RING PANEL 425T LINK
12
8
6
8
PA0786
PA0787
425LT-2464-16
425LT-2472-12
24X64 RING PANEL 425T LINK
24X72 RING PANEL 425T LINK
6
4
114
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
425T Standard Link Panels
PA0788
PA0790
425LT-2472-18
425LT-2472-24
24X72 RING PANEL 425T LINK
24X72 RING PANEL 425T LINK
6
8
PA0789
PA0791
PA0792
PA0793
425LT-2472-24-6
425LT-2475-15
425LT-2480-16
425LT-2480-20
24X72 RING PANEL 425T LINK
24X75 RING PANEL 425T LINK
24X80 RING PANEL 425T LINK
24X80 RING PANEL 425T LINK
6
4
4
6
PA0794
PA0795
PA0796
PA0797
425LT-2484-12
425LT-2490-18
425LT-2496-12
425LT-2496-16
24X84 RING PANEL 425T LINK
24X90 RING PANEL 425T LINK
24X96 RING PANEL 425T LINK
24X96 RING PANEL 425T LINK
3
4
3
4
PA0798
PA0799
PA0800
PA0801
425LT-2496-24
425LT-24108-18
425LT-24120-24
425LT-24140-20
24X96 RING PANEL 425T LINK
24X108 RING PANEL 425T LINK
24X120 RING PANEL 425T LINK
24X140 RING PANEL 425T LINK
6
4
4
3
PA0802
PA0803
PA0804
PA0805
425LT-24144-24
425LT-2532-16
425LT-2540-20
425LT-2548-16
24X144 RING PANEL 425T LINK
25X32 RING PANEL 425T LINK
25X40 RING PANEL 425T LINK
25X48 RING PANEL 425T LINK
4
12
12
8
PA0806
PA0807
PA0808
PA0809
425LT-2550-25
425LT-2560-20
425LT-2564-16
425LT-2572-24-6
25X50 RING PANEL 425T LINK
25X60 RING PANEL 425T LINK
25X64 RING PANEL 425T LINK
25X72 RING PANEL 425T LINK
12
8
6
6
PA0810
PA0811
PA0812
PA0813
425LT-2575-25
425LT-2580-16
425LT-2580-20
425LT-2596-16
25X75 RING PANEL 425T LINK
25X80 RING PANEL 425T LINK
25X80 RING PANEL 425T LINK
25X96 RING PANEL 425T LINK
8
4
6
4
PA0814
PA0815
PA0816
PA0817
425LT-25100-20
425LT-25100-25
425LT-25112-16
425LT-25120-20
25X100 RING PANEL 425T LINK
25X100 RING PANEL 425T LINK
25X112 RING PANEL 425T LINK
25X120 RING PANEL 425T LINK
4
6
3
4
PA0818
PA0819
PA0820
425LT-25125-25
425LT-25140-20
425LT-25150-25
25X125 RING PANEL 425T LINK
25X140 RING PANEL 425T LINK
25X150 RING PANEL 425T LINK
4
3
4
115
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
PA0821
PA0822
PA0823
PA0824
425RCST-099
425RCST-149
425RCST-199
425RCST-249
0-99 RING PANEL 425T CUSTOM
100-149 RING PANEL 425T CUSTOM
150-199 RING PANEL 425T CUSTOM
200-249 RING PANEL 425T CUSTOM
12
12
12
12
PA0825
PA0826
PA0827
PA0828
425RCST-299
425RCST-349
425RCST-399
425RCST-449
250-299 RING PANEL 425T CUSTOM
300-349 RING PANEL 425T CUSTOM
350-399 RING PANEL 425T CUSTOM
400-449 RING PANEL 425T CUSTOM
12
12
12
12
PA0829
PA0830
PA0831
PA0832
425RCST-499
425RCST-549
425RCST-599
425RCST-649
450-499 RING PANEL 425T CUSTOM
500-549 RING PANEL 425T CUSTOM
550-599 RING PANEL 425T CUSTOM
600-649 RING PANEL 425T CUSTOM
12
12
12
12
PA0833
PA0834
PA0835
PA0836
425RCST-699
425RCST-799
425RCST-899
425RCST-999
650-699 RING PANEL 425T CUSTOM
700-799 RING PANEL 425T CUSTOM
800-899 RING PANEL 425T CUSTOM
900-999 RING PANEL 425T CUSTOM
12
12
12
12
PA0837
PA0838
PA0839
PA0840
425RCST-1099
425RCST-1199
425RCST-1299
425RCST-1399
1000-1099 CUST RING PANEL 425T
1100-1199 CUST RING PANEL 425T
1200-1299 CUST RING PANEL 425T
1300-1399 CUST RING PANEL 425T
12
12
12
12
PA0841
PA0842
425RCST-1499
425RCST-1599
1400-1499 CUST RING PANEL 425T
1500-1599 CUST RING PANEL 425T
12
12
425T Custom Link Panels
PA0662
PA0663
PA0664
PA0665
425LCST-099
CUSTOM 425T LINK 0-99 SQ"
CUSTOM 425T LINK 100-199 SQ"
CUSTOM 425T LINK 200-299 SQ"
CUSTOM 425T LINK 300-399 SQ"
6
6
6
6
425LCST-199
425LCST-299
425LCST-399
PA0666
PA0667
PA0668
PA0669
425LCST-499
425LCST-599
425LCST-699
425LCST-799
CUSTOM 425T LINK 400-499 SQ"
CUSTOM 425T LINK 500-599 SQ"
CUSTOM 425T LINK 600-699 SQ"
CUSTOM 425T LINK 700-799 SQ"
6
6
6
6
PA0670
PA0671
PA0672
PA0673
425LCST-899
425LCST-999
425LCST-1099
425LCST-1199
CUSTOM 425T LINK 800-899 SQ"
CUSTOM 425T LINK 900-999 SQ"
CUSTOM 425T LINK 1000-1099 SQ"
CUSTOM 425T LINK 1100-1199 SQ"
6
6
6
6
116
425T Panel
4-Ply Polyester Panel Filter
Item No.
Model
Description
Qty/Case
PA0674
PA0675
PA0676
PA0677
425LCST-1299
425LCST-1399
425LCST-1499
425LCST-1599
CUSTOM 425T LINK 1200-1299 SQ"
CUSTOM 425T LINK 1300-1399 SQ"
CUSTOM 425T LINK 1400-1499 SQ"
CUSTOM 425T LINK 1500-1599 SQ"
6
6
6
6
PA0678
PA0679
PA0680
PA0681
425LCST-1699
425LCST-1799
425LCST-1899
425LCST-1999
CUSTOM 425T LINK 1600-1699 SQ"
CUSTOM 425T LINK 1700-1799 SQ"
CUSTOM 425T LINK 1800-1899 SQ"
CUSTOM 425T LINK 1900-1999 SQ"
6
6
6
6
PA0682
PA0683
PA0684
PA0685
425LCST-2099
425LCST-2199
425LCST-2299
425LCST-2399
CUSTOM 425T LINK 2000-2099 SQ"
CUSTOM 425T LINK 2100-2199 SQ"
CUSTOM 425T LINK 2200-2299 SQ"
CUSTOM 425T LINK 2300-2399 SQ"
6
6
6
6
PA0686
PA0687
PA0688
PA0689
425LCST-2499
425LCST-2599
425LCST-2699
425LCST-2799
CUSTOM 425T LINK 2400-2499 SQ"
CUSTOM 425T LINK 2500-2599 SQ"
CUSTOM 425T LINK 2600-2699 SQ"
CUSTOM 425T LINK 2700-2799 SQ"
6
6
6
6
PA0690
PA0691
PA0692
PA0693
425LCST-2899
425LCST-2999
425LCST-3099
425LCST-3199
CUSTOM 425T LINK 2800-2899 SQ"
CUSTOM 425T LINK 2900-2999 SQ"
CUSTOM 425T LINK 3000-3099 SQ"
CUSTOM 425T LINK 3100-3199 SQ"
6
6
6
6
PA0694
PA0695
PA0696
PA0697
425LCST-3299
425LCST-3399
425LCST-3499
425LCST-3599
CUSTOM 425T LINK 3200-3299 SQ"
CUSTOM 425T LINK 3300-3399 SQ"
CUSTOM 425T LINK 3400-3499 SQ"
CUSTOM 425T LINK 3500-3599 SQ"
6
6
6
6
PA0698
PA0699
PA0700
PA0701
425LCST-3699
425LCST-3799
425LCST-3899
425LCST-3999
CUSTOM 425T LINK 3600-3699 SQ"
CUSTOM 425T LINK 3700-3799 SQ"
CUSTOM 425T LINK 3800-3899 SQ"
CUSTOM 425T LINK 3900-3999 SQ"
6
6
6
6
117
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