Deltana is an architectural hardware manufacturer with a proven record for exceptional service and quality. Deltana inventories America's largest selection of architectural and door hardware in over nine fine finishes made from solid brass, zinc, aluminum, steel, and stainless steel. The Double Action Spring Hinge is a floor-mounted self-closing hinge with solid brass cover plates and trim. It swings in both directions and has a hold-open feature at approximately 90 degrees.