The Security Door Chain is the perfect solution for additional home security. Iron Chain This door chain is made from malleable wrought iron. It has a black antique finish.   Ludlow Black Antique Range The door chain is part of the superb Ludlow Foundries Black Antique Collection, which combines the most up-to-date production processes with timeless designs. We recommend that you match your antique door chain with other products from the range, such as door knockers, escutcheons and letter plates, to give your door a traditional black antique look.