30080 Replacement For Shop Vac Wed Dry Vacuum Cleaner Filter Retainer Cover | | For Use With Filter Numbers 903-04-00 (9030400) And 903-34-00 (9033400) Filters. | | Diameter Across Top Of Lid 6 3/8" Thickness 1 5/8" | | Diameter Across Bottom Of Lid 5/8" | |