The Forge retro-fit Door Chain allows the user to open the door just enough to talk to callers or pass or receive small objects without fully opening the door and allowing access to callers.Supplied with fixing screws and fitting instructions.Fitting Instructions:1. Mark a height line on the door frame and door, position the bracket with chain attached onto the door frame and screw into position using the screws supplied.2. Position the long bar onto the door face so that the widened gap is furthest from door edge and use supplied screws to fix in place. Made from Steel and Brass plated for a long lasting, attractive finish.Finish: Brass Plated. Size: 80mm.