Double wall top lift provides added durability for this convenient, secure mail truck. Powder-coated steel base with heavy duty casters adds strength. Vinyl side flaps for easier unloading. Durable design holds up well under extended use. Color: Gray; Capacity (Weight): 1000 lbs; Caster/Glide/Wheel: Heavy Duty Casters; Material: Steel/Polyethylene/Rubber/Vinyl.