This model is great for smaller shops, and can be used for plastics, woods and finishing materials. The 3444B comes with 80/20 cartridge filters which clean with a 99.95% capture rate at 0.5 micron. This model comes standard with casters, rubber coated top, and the Denray "Jet Pulse" push-button cleaning system. This model also comes with the options of a tilt out front edge and 7" working vise as add-on's.