Shelves are formed from 12 gauge steel with structural angle corners and shelf reinforcements on shelves longer than 36 in. Shelves have 1-1/2 in. lips. Raised offset handle includes cross brace hand guard for added safety. These welded units are shipped set up and ready for immediate use. Casters are 10 in. x 2.75 in. solid/puncture-proof rubber. Shelf clearance is 18 in. Durable powder coated gray finish.