Convenient 12" long writing shelf adds to the versatility of this truck. Bottom shelf has a 1-1/2" retaining lip, and the top shelf is available with flush edges or 1-1/2" retaining lip. 2 rigid and 2 swivel 5" polyurethane casters with brakes. Top shelf height is 35", writing shelf height 39". Storage Pocket measures 14"W x 12-1/2"D x 4-3/4"H.