This standard-duty pneumatic door closer uses air pressure to provide sure, silent closing. The door closing speed is adjustable, ensuring that doors shut securely every time. The seasonal adjustment options allow you to swap between window and screen on your door. Ideal for doors up to 1-1/4" thick, 30 to 50 lbs. The door closer measures 1.25" in diameter by 10.5" long. The SK9 includes all necessary brackets and screws for installation and is easy to install using the existing holes on your door. To protect your door and the door closer, a storm chain is recommended.Replacement door closer for storm doors up to 1-1/4" thickSure, silent closing with adjustable closing power which insures that doors will shut securelyInterior oil reservoir continuously lubricatesAll internal partsElestrostatically applied chip proof finishAttractively packaged on Skin-Pack card with installation instructionsComplete with adapter plates, door bracket, and installation screws
