Hoover S6631, 6635, S6751 and S6755 Wet & Dry Vacuum Cartridge Filter THIS GENUINE HOOVER FANFOLD CARTRIDGE FILTER PROVIDES A LARGE FILTER MEDIA AREA FOR DRY PICKUP WITH A HOOVER WET/DRY UTILITY VACUUM. IT IS 5 5/8" HIGH WITH A BLACK VINYL ENCLOSURE ON ONE END AND A THICK VINYL SEAL ON THE OPEN END. A METAL GRILL AROUND THE INSIDE REINFORCES THE FILTER MEDIA. THE