Filter Element Element Material Polyester Compatible Manufacturer Part Number C21138/1 Overall Height 6.43 in Inside Diameter 5 11/16 in Outside Diameter 8 3/8 in Filter Rating 5 micron Filtration Efficiency 99 Percent Maximum Flow Rate 322 cfm Features Moisture Resistant Pleated Media for High Dirt Holding Capacity Housing Material Steel Maximum Operating Temperature 220 Degrees F