Detailed informations(Products): 1. High airflow volume; 2. Large surface area; 3. High dust-holding capacity; 4. Sturdy construction, Compact size; 6. Washable,cost-effective. Filter Media Synthetic fiber(Glass fiber,nanofiber and polyester also can be choosen) Outer Frame Aluminum/galvanized steel or plastic. Header 20mm,25mm Efficiency ASHRAE 45%,65%,85%,95% EN779: F5,F6,F7,F8 Temperature limit 70℃ Humidity limit 90%RH 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: Pocket filters are widely used in HVAC applications to remove dust from ambient air. Usually they are used as final filters in commercial applications or as prefilters for HEPA filters in the parmacentical and other high demand industries. Also, we warmly welcome: -- Famous brand to do OEM; -- End users or agents to find replacements here; -- Dust collector manufacturers to do customization.