These plastic service carts feature impact-resistant polyolefin shelves supported by 4" rubber casters. Choose either two- or three-shelf models. Two-shelf models carry up to 300 lb; three-shelf models carry up to 400 lb. Attach optional wastebasket and storage bin to models 47300-00 and -10 to use as a janitorial cart. Shipped unassembled. NSF-certified.