The CRAFTSMAN 1/2 Height Purple Stripe Filter for wet/dry vacs is made for use with 3 to 4 gallon CRAFTSMAN vacs. This filter is designed for everyday pick-ups from dirt and sawdust, to jobsite debris or general build up in your car or truck. For added convenience, the filter material can be washed with water and reused. To ensure maximum performance of your shop vacuum cleaner, replace wet dry vac filters regularly.