Under Dash Creeper, Creeper Seat Style Under-the-Dash Creeper, Duty Rating Standard-Duty, Maximum Load Capacity 350 lb, Dimensions 11 in x 20 in, Height Range 20 in, Frame Material Steel, Creeper Material Steel, Height 15 in to 20 in, Includes Leg Extension, Overall Height 20 in, Overall Length 39 in, Overall Width 11 in