3) Replacement Shop Vac Cartridge HEPA Filter 90398 Type AA fits E87S450 SP550A | eBay
Small Cartridge Filter 90398 903-98 90399 Type AA for Shop Vac Wet/Dry Vacs - Felji
Filter Replacement for Shop-Vac 90398, 903-98, 9039800, 903-98-00 Type AA Wet/Dry Vacuum Cartridge Filter, Fits Most for Shop Vac 4 Gallon and Less - - Amazon.com
90398 Type AA cartridge filter fits for Shop-Vac 4 Gal Wet/Dry Vacuum ESSSQ550 | eBay
1 pcs 90398 Type AA cartridge vacuum filter fits for Shop Vac 5 Gallon BullDog Wall Mount Wet/Dry Vac 5HM450| | - AliExpress
6 Pack Small Cartridge Filter 90398 903-98 90399 Type AA for Shop Vac Wet/Dry Vacs - Walmart.com
Shop Vac Filter QMH45A
LXun Replacement Cartridge Filter for Shop-Vac 90398, 903-98, 9039800, 903-98-00, and 90585 Foam Sleeve Filter Compatible with Most Wet/Dry Vacuum, 2 Filter + 4 Foam + 2 Brushes - - Amazon.com
Amazon.com: IN VACUUM 2 Pack Replacement for Shop Vac Filter 90398, 903-98, 9039800, 903-98-00, 952-02H87S550A, Hangup Wet Dry Vacuum Cartridge Filter, Fits Most for Shop Vac 4 Gallon and Less : Tools & Home Improvement
Shop-Vac Reusable Small Dry Shop Vacuum Cartridge Filter at Lowes.com
90398 Type AA cartridge filter fits for 4 Gal Wet/Dry Vacuum with SVX2 ESLSQ550 | eBay