Keep your tank dust free with FLEX Fleece Dust Bags designed for the FLEX 1.6 Gallon Wet/Dry Vacuum (FX5221-Z). These disposable fleece dust bags capture fine particles and even pre-filter to prolong the life of your filter. FLEX Fleece Dust Bags also have a higher capacity than conventional bags. Switch from dry to wet vacuum with no mess. Comes in a 5-pack for added convenience.