All carts built to Sterile Guard specifications. Fully-welded construction, 16 gauge stainless steel. Shelves are stainless steel, wire roller or solid. One shelf included on all models except 6945 and 6950 which come standard with two shelves. Exterior push handles for better control and more interior space. Easy to sanitize, #4 Finish. Sealed doors for sterility control. Positive lock door latches. Non-marring corner bumpers. Replaceable standout corner bumper. 5" casters, maintenance-free .