Protect your storm or screen door and the door closer from damage caused by strong winds by installing Ideal’s SK17 Deluxe storm door wind chain. The wind chain prevents the door from over extending. When a door opens too much, potential damage to the hinges and the closer can occur. The SK17 wind chain is made from high quality steel and is plated to protect it from the elements. The SK17 includes a larger high profile door bracket that keeps the chain further away from the glass and helps to reduce the chance of contact. This is more common in very thick storm doors, but can be used on all doors. All screws, brackets and instructions are included. This is original equipment quality. Ideal Security has been supplying door manufacturers with quality products since 1956.