Duple Metsec is a former bus bodywork builder based in West Midlands of the United Kingdom, which usually supplied body kits for assembly overseas.It was originated from the bus body manufacturing business of Metal Sections (known as TI Metsec in the late 1970s, now known as Metsec plc). Metal Sections, as the name suggests, produced prefabricated sections of metal for customers for a variety of products.