Shelves are formed from 12 gauge steel with structural angle corners. Shelves have 1-1/2″ retaining lips. Raised offset handle includes cross brace hand guard for added safety. These welded units are shipped set up and ready for immediate use, with 2 swivel and 2 rigid casters. Cushion-load casters for use over rough or uneven surfaces. Shelf clearance is 18″. Durable powder coated gray finish.