We purchased one of the hoover wet/dry vacs at a garage sale that didn't have a filter. This one is made for our model and is about the size of a paint can. The fit is snug but it has to be so it will seal and trap all the nasty dry particles. If you are picking up drywall dust you might need a few of these, that or an air compressor / gun to blow out the filter a couple of times. This is a great filter! Highly recommended!