Carts consist of wire shelves with plastic split sleeves, two one-piece handles, donut bumpers and casters. Type 304 stainless steel models are ideal for corrosive, wet environments and include 5" (127mm) polyurethane casters with polymer caster horns and stainless axles. Super Erecta Shelf construction makes units easy to assemble and makes relocation of shelves quick and simple. Open wire construction minimizes dust accumulation, maximizes visibility and air circulation.