Heavy-duty Conductive Chrome Wire Shelving unit allows up to 800 lb. shelf capacity. Starter kits come complete with 4 posts, 5 shelves, plastic conductive split sleeves and drag chain. Additional shelves and plastic conductive split sleeves may be purchased separately. Mobilize starter shelving unit using optional conductive mobile kit, WR-00CO. Includes 4- 74" Posts and 5- 30" x 48" Chrome Wire Shelves and plastic conductive split sleeves