Made of HEPA material that maintains suction power even when used with fine debris like drywall dustExclusive non-stick surface resists cloggingEasy to clean, just tap or rinseFor use with non-hazardous, non-toxic, non-flammable materials onlyFits 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 portable model H87S, 5 gallon HangUp®, 5 gallon Wall Mount and 6 gallon long life model P12S Vacuums