Detailed informations(Products): 1. Large air flow; 2. Lower resistance; 3. High dust-holding capacity; 4. Sturdy construction; 5. Washable,cost-effective. Materials: Item Material(Standard) Outer Frame Aluminum/galvanized steel sheet Filter Media Synthetic fiber/Glass fiber Efficiency G3-F8(EN779:2011) Comprehensive advantages(Company): 1. The biggest manufacturer of filters in China; 2. H&V`s biggest customer in China; 3. Our vast experience and a state-of-the-art laboratory enable us to provide customization; 4. Welcome you to our factory and you will be convinced by our advanced workmanship and big scale. Application: Widely used in central air conditioning, gas turbine air intake, oxygen plants, steel mill blast oxygen station, furnace blast air station, power plant , automobile, hotel and office buildings. Also, we warmly welcome: -- Famous brand to do OEM; -- End users or agents to find replacements here; -- Dust collector manufacturers to do customization.