Shop Vac Wet/Dry Cartridge Filter Pack of 4,  	903-98-00 Efficient Filtration For Dirt & Debris Fits Shop-Vac Hang-Up Pro Vac and many others Including models 9520262 , 5872462 and 925022 For Dry Or Wet/Dry Pick Up Approximate size of cartridge: 5.75" diameter and 5" high Made in USA