RR-1XB Specifications (Dimensions in inches, weight in pounds) Width, Overall - Length, Overall - Height, Overall - Shelf Dimensions - Height, Top Shelf - Shelf Clearance - Net Weight (lbs.) - Shipping Weight (est. lbs.) - Load Capacity at Rest 500 lbs. List Price (Call for dealer information) Pricing Material: DS-3, DS-4, DS-4L - Natural finish aluminum alloy. Casters: 5" molded rubber tires corner mounted (2 swivel, 2 rigid). Models with Rol-Guide have 4 corner mounted swivel wheels.