90398 replacement filter compatible with Shop-Vac 90398 903-98 9039800 903-98-00 cartridge filter, compare to part no. 90398 Compatible with Shop-Vac 90398, Shop-Vac H87S550A, Shop-Vac 587-24-62, Shop-Vac E87S450, Shop-Vac 587-04 -00, Shop-Vac 286-00-10, Shop-Vac 962-15-00, Shop-Vac 394-20-00, Shop-Vac Wall- Mount 394-20-00, Shop-Vac SP650C, Shop-Vac Back Pack SP650C, Shop-Vac Back Pack 286-00-10, Shop-Vac VN92550A, Shop-Vac Hardware Store Wet/Dry Vac VN92550A, Shop-Vac Hardware Store Wet/Dry Vac 962-15-00, Shop-Vac Hardware Store Wet/Dry Vac H87S550A HEPA FILTRATION: 90398 cartridge filters capture 99.97% of fine dust and particles. Made for dry pick-up only. 90526 foam sleeve is used for wet pick up.✖𝐃𝐨𝐧'𝐭 𝐮𝐬𝐞 𝐭𝐡𝐞𝐦 𝐭𝐨𝐠𝐞𝐭𝐡𝐞𝐫. WASHABLE & REUSABLE: We give away 4 Foam bags to keep the 90398 filter clean, extend its life. Clean Shop vac aa filter with water and wait for air drying before reinstalling. SERVICE: Shop vac filter 90398 replacement x 2, foam sleeve 90526 x 4. Any question about type aa shop vac small cartridge filter, please consult