This Three Sided Solid Shelf Truck include a height adjustable shelf for flexible storage and transport of small to large packages. The three-sided design provides limited one side access while allowing easy transport of large cartons, boxes and packages. Great for warehouses, stock rooms, shipping areas and more. Steel shelf trucks are made using all welded steel with 14 gauge steel sheet metal on 3 sides. 12 gauge steel shelves feature 1-1/2" retaining edges. Middle shelf is height adjustable at 3-1/2" increments. 3/16" thick angle corner uprights reinforce trucks for extra support and strength that withstands up to 3,000 lbs. Tubular steel handle allows easy maneuvering. 12 gauge caster mounts secure 6" phenolic casters (2 rigid, 2 swivel) to allow easy mobility. Overall height is 57". Gray powder coat finish. 1 Year Limited Warranty.