Adjustable panel trucks have 6 removable, 1-1/4″ tubular dividers - 2 each: 12″, 24″ &36″H, wood capped model 3/4″ plywood over steel. It is used to transport, store, or distribute multiple sizes of sheets, doors, and panel. It is rugged 3/4″ thick plywood deck mounted into an all-welded 1½″x 1″ protective wrap-around angle iron frame with rounded safety edges. Upright frame pockets are spaced on 3½″ centers, 7 pockets on 24″W models, 9 pockets on 30″W units. It comes standard with two swivel and two rigid casters. The casters are 5″ polyurethane with 1000 lb capacity wears like steel yet protects floors like soft rubber. It have 8″ mold-on rubber with 2000 lb capacity has a floor protective cushion treads.