Filter Cartridge Element Material Paper Compatible Manufacturer Part Number 81-0471 P642 Overall Height 2.5 in Inside Diameter 4 1/4 in Outside Diameter 6 in Filter Rating 2 micron Filtration Efficiency 99 Percent Maximum Flow Rate 175 cfm Features Pleated Media for High Dirt Holding Capacity Housing Material Galvanized Metal Maximum Operating Temperature 220 Degrees F