HQRP Foam Filter Sleeve for Shop-Vac LB550B, LB625, LB650, LB650B, LB650C, LL600, LL625, LL650, LM500, LPV550 Wet Dry Vacuums + Coaster HQRP&reg; Foam Filter Sleeve + HQRP&reg; Coaster; Use on filter cage for vacuuming water, for picking up wet messes when used alone. Also required when using reusable disc style filters. Replaces Shop-Vac Foam Filter Sleeve Part # 9058500 / 905-85-00 / 90585. Required unless you are using a cartridge filter. 100% Compatible with Original filter. 2 weeks DOA replacement warranty!