West build-your-own utility ramp kit: 600 lb. capacity, 12ft.L, model #1244. The West 12ft. ramp kit is designed to load anything that rolls or has wheels, to a maximum lift of 30in. You supply the decking material (3/4in. plywood recommended), cut it to your desired width (up to 48in.W), then attach the side guide rails that are supplied in the kit. The guide rails add strength and prevent you from rolling off the side of the ramp. Ideal for scooters, wheelchairs, strollers, walking, cargo and more. Includes two rubber-coated support fingers. Unopened.