STEEL CONSTRUCTION SUPPORT: Built from steel with a silver finish, this door stop spring chain supports use in storm door spring chain stop setups where surface-mounted components are needed for door swing limitation. 13" CHAIN LENGTH SECTION: The main chain section measures 13" (330 mm), helping to limit door opening angles on storm doors, cabinet doors, or utility access panels that benefit from mechanical stop chains. 15" FULL EXTENSION SIZE: The overall unit length extends up to 15" (381 mm), including the spring segment, supporting wider clearance needs or setups where the spring helps buffer impact at the end of swing. SPRING-LOADED CONTROL FEATURE: A built-in spring in the middle of the chain provides resistance during door movement, helping reduce pressure at full extension in storm door spring chain stop installations. SUITABLE FOR DOOR STOPS: Fits into cabinet door chain stop, storm door spring chain stop, and general door stop chain setups where controlled opening range is needed using a surface-mounted connection. Door Chain Stop steel With Spring sdh 9 for Storm And Screen Doors