Amazon.com: YUEFENG 90304 Filter and 90585 Foam Sleeve Compatible with Shop-Vac 5 Gallon and Up Wet/Dry Vacuum, Compare to Part 90304, 90585 (2+4) : Tools & Home Improvement
90304 Type U cartridge filter fits for Shop-Vac 6 Gallon Wet/Dry Vac SS11-450 | eBay
SET OF 20, FOR HONDA, ACURA WHEEL LUG NUTS 90304-SA5-013, UAP-36-040 | eBay
Amazon.com: Replacement Filter for Shop-Vac 90304, 90585, 90350, 90107, 90333, fits most Wet/Dry Vacuum Cleaners 5 Gallon and above, With Lid and Brush (9 Pack) : Tools & Home Improvement