Aluminum Door Closer: Heavy-duty pneumatic storm door closer features sturdy construction and is constructed from high-quality aluminum with a stunning silver finish that perfectly complements the aesthetics of any storm door; heavy-duty material ensures to easily withstand daily use ;The storm door damper with snap plate hold-open function is very practical, allowing you to keep the storm door open when needed, adding convenience during busy times or when carrying items in and out of Energy Efficiency: In addition to practical advantages, heavy-duty draft door closers also help improve energy efficiency; ensuring that draft doors are always tightly closed, minimizing air leakage and preventing drafts, thereby reducing energy consumption in heating and cooling systems Versatility: Standard pneumatic storm door closers are versatile and can fit a of storm door types and sizes; whether your home has standard-size doors, heavier office doors, or screened storm doors, this Stormproof door closers can be easily handled ADJUSTABLE: Depending on your preference, you can also easily increase or decrease closing speed and force via a screw at of the pneumatic tube; fully lubricated spring stretches, allowing the door to open a full 90 degrees, then pulls the door open at a controlled speed Closing; by using air within the pneumatic tube to cushion the door force, preventing the door from slamming shut and preserving the life of the door closer, door and door frame Ready to install: All mounting hardware included, no additional parts to order or add. Comes with seasonal lock adjustment option to switch between glass or screen inserts Clean look: pneumatic tubes and accessories feature a high-quality finish that blends seamlessly into the door and frame Colour:silver Material:aluminum Packa Contents: 2 x Closer 2 x installation kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.