Generic Shop Vac Type U Wet/Dry Cartridge Filter w/o retainer. OEM 903-04-00
Amazon.com: Fits Shop Vac Bags 10-14 Gallon Type F - 9066233 9066200 90662 Double-Layer Type I 90672 9067200 9067233 VF2005 ShopVac 12 Gallon Vacuum Filter Bag (5 pcs) : Home & Kitchen
MULTI FIT Wet Dry Vac Filter VF2007TP Standard Replacement Wet/Dry Vacuum Filter for Most 5 Gallon and Larger Shop-Vac Branded Wet/Dry Vacuum Cleaners (2-Pack) - - Amazon.com