Overhead Door Holder Overhead Door Holder Deltana is the architectural hardware manufacturer with a proven record for exceptional service and quality. 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