The RIDGID 3-layer pleated paper filter is designed to capture fine dust and features a double-pleated design that captures particles such as dust, drywall sanding and fireplace ash. The filter fits all RIDGID wet/dry vacs 3 Gal. to 4.5 Gal. With its patented Qwik Lock feature, the filter simply snaps on or off the vacuum for easy cleaning. Color: Blue.