Precisionaire 225T Panels manual PlyPolyester Panel Filter, For Use As A Pre-Filter

225T Panel

2-Ply Polyester Panel Filter

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

90

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.

Fractional Efficiency vs. Particle Diameter

	100
%	80
Efficiency	60
Fractional	40
	20
	0
	0.1	1	10

Particle Diameter (∝m)