Automatic energy-saving: This door closer ensures automatic door closing, effectively preventing children and pets from leaving the door half open. It minimizes unnecessary air leaks - keeping heated or cooled air in your space to reduce energy waste and lower utility costs Quiet and Stable: Equipped with shock-absorbing pneumatic devices, the door can be closed smoothly and without vibration every time it is closed. It eliminates banging sounds, protects your door and frame, while ensuring a secure seal, improving safety and convenience Adjustable closing speed control: By rotating the built-in screw clockwise (slower) or counterclockwise (faster), the closing speed can be easily adjusted. You can customize the movement of the door according to your needs Quick and easy installation: simply measure the width and stroke of the door you are closing, and then follow the simple step-by-step instructions. Very suitable for DIY enthusiasts, it can make your door close and run in a few minutes Multiple heavy-duty options: designed specifically for sliding doors, capable of supporting doors weighing up to 20-50kg or 50-70kg. It is suitable for homes, offices, and other places, with stable performance that ensures the safety of high or heavy-duty sliding doors, Weight: 1.21 Pounds, Manufacturer: AMSLSIU