Structure:

Frame	Filter Media	Seperator	Flange
Aluminum/Galvanised steel	Meltblow PP/Glassfiber	Stiff corrugated cardboard	With header/no header

Product Features:
- Large airflow
- Low pressure drop
- Firm contruction

Application
Secondary filtration in central ventilation systems, particularly to protect and extend the life of HEPA/ULPA filters. They are suitable for use in ventilation and air conditioning systems of various airflows.

General technical data:
- F5~F8 EN779; MERV9~14 ASHRAE
- Final pressure drop: 2~3 times initial pressure drop
- DIN 53438 Flammability: F1
- UL 900 Standard: Class 2
- Thermal Stability:80celcius(High temperature resistant types available)
- Humidity: 100% RH

Sample data:

W*H*D(mm)	Filter Class	Filter Area(m2)	Airflow(CMH)	Intial Pressure Drop(Pa)
593*593*150	F5	2.53	2520	70
	F6			80
	F7			95
	F8			110
287*593*150	F5	1.27	1230	70
	F6			80
	F7			95
	F8			110
592*592*292	F5	5.51	3400	70
	F6			80
	F7			95
	F8			110
287*592*292	F5	2.73	1650	70
	F6			80
	F7			95
	F8			110

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