Dunbarton Door and Entry Systems began its innovative journey over sixty years ago in post-World War II Detroit, Michigan. William A. Ternes established Ternes Steel Company, Dunbarton’s founding company, in 1946 to develop military housing. For several years the company also manufactured metal tubing to hang imported bananas during shipment to the U.S. In 1954 the company took an even wider turn in its manufacturing expertise by designing and producing the first steel bifold closet door. With the introduction of the Slimfold door, the small company entered the building products industry — and never looked back.