Filter, Element Material Fiberglass, Compatible Manufacturer Part Number F-274P-400F, F-274P-500F, FS-274P-400F, FS274P-500F, Overall Height 14.5 in, Inside Diameter 8 in, Outside Diameter 11 3/4 in, Compatible Product Type Hospital Vacuum Units, Medical Gas Distribution Systems, Vacuum Pumps and Systems, Filter Rating 0.3 micron, Filtration Efficiency 99.97 Percent, Maximum Flow Rate 643 scfm, Housing Material Carbon Steel