Bissell Commercial Big Green Commercial Protough Upright Vacuum Shingle Fasteners long lasting operation Safety sensors project Item Weight:.625 long lasting operation Safety sensors project an invisible beam preventing the garage door from closing on people Greenguard Gold Certified providing the ultimate deep clean in any commercial space Heat overload protection system helps prevent damage to the motor if the bag becomes full Large rear wheels make transportation easy allowing you to clean multiple rooms without unplugging Twill shake out bag with nonstick cloth design and reinforced see thru fan chamber provides a low maintenance cleanup Lifetime warranty on fan gives you peace of mind