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