Overhead Door Holder Overhead Door Holder Deltana is the architectural hardware manufacturer with a proven record for exceptional service and . Deltana inventories the country's largest selection of architectural, lighting, and door hardware in over nine fine finishes made from solid brass, zinc, aluminum, steel and stainless steel. Non-Handed Slide Track Design Recommended for Medium-Traffic, Medium-Weight Doors Heavy Shock Absorber Spring Provides Compression Before Dead Stop