Inlet Vacuum Filter, Outside Diameter 18 1/2 in, Connection Style Flange, Inlet Size 6 in, Inlet Type Flange, Outlet Size 6 in, Outlet Type Flange, Maximum Air Flow 1, 100 cfm, Type Standard Duty, Filter Rating 5 micron, Filtration Efficiency 99 Percent, Compatible Manufacturer Part Number 2EPT6, 2EPT7, 2EPU1, 2EPU2, Compatible Grainger Part Number 2EPT6, 2EPT7, 2EPU1, 2EPU2