The DELTA 50-761 2 HP 4 Bag 2,100 CFM Dust Collector features a volume-saving vertical design that doesn't compromise the power of its 2 HP motor, which moves up to 2,100 cubic feet of air per minute. The vertical dust collector sits on heavy-duty casters, a sturdy steel base, and four glide wheels that can move anywhere in your shop without damage. The durable plastic collection bag can be mounted on one of two snap-in rings. The upper bag can filter out pollutants one micron in size--contaminants that your eyes can't see but your lungs will thank you for. The collection bag is a clear 6-mil durable plastic that allows you to see when the bag needs changing. Exhaust is filtered through the filter bag rather than the collection bag to prevent air from escaping. The dust collector fits woodworking machines that are compatible with a 4-inch diameter hose. It includes four 6-mil plastic collection bags, two 1-micron filter bags, four swivel caster assemblies, a cord, a plug, and an instruction manual.