With this one simple upgrade, youll increase the filtration of your 1250 CFM Wall Mount Dust Collector by up to 30 times, giving the air quality in your shop a welcome boost. The premium pleated filter captures dust down to 1-micron in size, compared to 30 microns for the stock filter bag. You also get the convenience of a crank-style filter cleaner?just rotate the handle to clear dust off the pleats. Last but not least, the dust now drops neatly into an included plastic bag for easy emptying. Features: Use with the Rockler 1250 CFM Wall Mount Dust Collector (#54352, sold separately)Steel frame with fabric pleats on the insideRubber gaskets for a tight seal to your collectorLarge handle rotates an agitator to clean dust off the pleatsStrap clamp and plastic collection bag included