Profile: SDV Roof Racks (Clitheroe) Ltd. is a manufacturer of heavy duty galvanized commercial roof racks. Our product line includes standard builder's roof rack, alternative solutions, side racks & accessories, and roof racks. Our builder's roof rack is a flat bed rack with rope hooks all round, side pegs for loading against, and a single half width ladder roller to the rear (on all racks except those for the lowest vans). Our side rack is used for carrying doors, windows, garage doors, and glasses. These racks are of the same strong, durable construction as our galvanized roof racks, and provide a method of carrying window frames and doors when combined with an SDV roof rack.