Application Model:Compatible With 113. Series 179790 177800 177900 177950 179831 178950 179830 179841 179840 178100 179860 178000 178450 179110 and more ,dry vacuum cleaners . For Dry Debris Pick-up Only. Not for Wet Vacuuming. For most 5 / 6 / 8 / 12 gallon vacs made BEFORE 1988. Please check the manufacturing year of your shop vac before ordering.