Structure:

Frame	Filter Media	Face net
Water resistant cardboard	Polyester/Polycotton	Spot mesh, expanded mesh

Product Features:
-Self-supporting material
-No metal, thus fully incinerable
-Low pressure drop media

Application:
As prefilters for intake, exhaust and recirculating air systems, extending the operational lifetimes
of the downstream fine filters.

General technical data:
-G3~G4 EN779; MERV5~8 ASHRAE
-Available in 23mm, 44 and 95mm depth
-Average arrestance: 92%(ASHRAE 52.2-1992)
-DIN 53438 Flammability: F1
-UL 900 Standard: Class 2
-Max air flow rate: 125% of nominal air flow
-Final pressure drop: 2-3 times initial pressure drop
-Thermal Stability: Up to 70℃
-Moisture resistance: 100% RH

Sample data:

Type	W*H*D(inch)	W*H*D(mm)	Filter Class	Filter Area(m2)	Airflow(CMH)	Intial Pressure Drop(Pa)
Standard airflow	24*24*1	595*595*23	G4	0.56	1900	85
High airflow				0.83	2600	65
Standard airflow	20*20*2	495*495*45	G4	0.61	1330	55
High airflow				0.75	2000	80
Standard airflow	24*24*4	595*595*95	G4	1.68	1900	45
High airflow				2	3400	70
Standard airflow	12*24*4	287*595*95	G4	0.84	930	45
High airflow				1	1600	70

https://drive.google.com/file/d/0Bxk0k7JxzX13VENHN2E3dDRURXc/view