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. This item has been restricted from sale in the following state (s): []