Sandusky Lee MWS481874-B 6-Tier Wire Shelving Unit with 3" Rubber Casters, 6 Wire Shelves, Black, 74" Height x 48" Width x 18" Depth Six-tier mobile wire shelving unit has black powder-coat finish, casters, and six shelves Adjustable shelves have welded wire construction and are reinforced with wire trusses and struts for strength Open wire design offers visibility of contents, permits air circulation in the work environment, and helps resist dust build-up Four 3" rubber casters with brakes on two casters for control and maneuverability Has a 200 lb. per shelf capacity, evenly distributed