Manufactures aluminum duct work for the heating, ventilating & air conditioning industries Glass ducts or ductwork, Stone ducts or ductwork, Non ferrous alloy ducts or ductwork, Aluminum ducts or ductwork, Stainless steel ducts or ductwork, Precious metal ducts or ductwork, Copper ducts or ductwork, Flexible ducts, Rigid ducts, Magnesium ducts or ductwork