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FOR USE AS A PRE-FILTER
The 225T panels are manufactured from
two distinct 100% resin bonded polyester
media layers with a wire support frame
sealed in between the two layers.This pro-
vides a self-supportive, self sealing panel
filter which significantly decreases air
bypass when installed in the entire filter
track.
The entry layer of the 225T panel is made
from 15 denier polyester fibers lofted to a
1” depth. This single denier media pro-
vides the first stage of filtration. 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 225T
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 final layer.
225 Panel filters are available as single panels with one single wire
support covering the entire filter area, or link panels utilizing multiple
wire support pieces inside a single piece of media. Both the single
panels and the link panels are available in custom sizes.
Test Type Fractional Efficiency
Test Number T033103A
Flow Rate/Velocity 1968 cfm
Test Aerosol: KCI Neutralized
DP (”H20) 0.414
Size 24x24 panel
Initial
Size Fractional
Range (mm) Efficiency (%)
0.3-0.4 0.8
0.4-0.55 6.3
0.55-0.7 14.8
0.7-1.0 25.2
1.0-1.3 34.4
1.3-1.6 40.6
1.6-2.2 47.0
2.2-3.0 53.5
3.0-4.0 59.6
4.0-5.5 65.7
5.5-7.0 70.2
7.0-10.0 75.4
Fractional Efficiency vs. Particle Diameter
Fractional Efficiency %
100
80
60
40
20
0
Particle Diameter (µm)
0.1 1 10
225T Panel
2-Ply Polyester Panel Filter