reliable stainless steel wire mesh/metal wire mesh/cylinder mesh filter Filter Cylinder liquid filter cylinder cartridge cylindrical filter cartridge Air Filter Cartridge suitable filtration Filter Cylinder(air filter cylinder cartridge,cylindrical filter cartridge) Air Filter Cartridge: 1, It provides up to 25 percent more filtration air flow than other same-sized cartridge. 2, Shorter and stiffer filter pleats help minimize dust entrapment simplify filter cleaning. By reducing the height of the pleats from the standard 2 inches to 1.5 inches, the pleat wall is less likely to collapse or bend, which can encapsulate dust and prevent it's expulsion. Meanwhile cost was reduced. 3, Oval-shaped cartridge filters have fewer areas of high velocity, resulting in a lower potentially for media abrasion and increased filter life. Specification Model Major axis Minor axis Length Filtration surface(m2) FT/O3266 365-280mm 288-203mm 660mm 18m2 FT/O3275 365-280mm 288-203mm 750mm 20m2 FT/O3288 365-280mm 288-203mm 880mm 22m2 FT/ 03290 365-280mm 288-203mm 915mm 23m2