CleanStream® Gore® Small Wet/Dry Vacuum Filter, Cartridge/Hepa, Fits 1 - 6 US gal.Pack of 2 Made of HEPA material that maintains suction power even when used with fine debris like drywall dust Exclusive non stick surface resists clogging Easy to clean, just tap or rinse For use with non hazardous, non toxic, non flammable materials only Fits Shop Vac 1 4 gallon wet dry vacuums (except models J200A, K250, KA450, L250, MACM 250, MACS 200D, MC150A, MC12V1800, 1x1, Micro, HangOn, HangUp Mini, All Around, All Around Ez), 5 gallon