Detailed information(Product): Item Material(Standard) Material(Alternative) Filter Media Cellulose/Polyester/Synthetic All kinds of H&V air filtration`s fiber/Nanofiber filter media at option Top cap Galvanized Steel Stainless Steel Closed bottom Galvanized Steel cap Gasket EPDM Silicone,Urethane Inner Mesh Galvanized Steel Stainless steel Outer Mesh Galvanized Steel Stainless Steel Finishing Treatments Teflon-coating,waterproofing,oilproofing,flame-retarding treatment, antistatic coating,etc 1. Wide application range: There are ample filter media selections of high quality  available,making it suitable for various industries and dust types, including abrasive, toxic and explosive dust. 2. Business model available: OEM for some famous brands; Replacement filters; Aftermarket filters. 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. Applications: Except for gas turbine air inlet systems, the square flange cartridges are also ideal for air filtration of dust and fume from cement, metal/aluminum, food & beverage, wood work, chemicals, powder coating, plasma/laser cutting, sand blasting, textiles,welding and casting. Please contact us if you have any questions about square end cap filter cartridge.