Auto Door Closer, Suitable for 25~45kg Door

1. What is a door closer?

A door closer is a mechanical device that automatically closes a door in a controlled manner, preventing it from slamming . It stores the energy used to open the door in a spring and then releases that energy to return the door to a closed position.

2. Why door closer is important?

> Safety: Prevents doors from slamming shut, reducing the risk of injury.

> Fire Safety: Keeps fire doors closed to contain fire and smoke, which is critical for compartmentalization . In many jurisdictions, fire doors are required by code to         have a functional self-closing device.

> Energy Efficiency: Ensures doors close properly to maintain consistent indoor temperatures.

> Security: Guarantees that doors latch securely after being opened.

> Hardware Protection: Reduces wear and tear on the door, frame, and hinges by minimizing slamming or improper alignment.

3. How do I adjust my door closer?

Most door closers have adjustment screws, typically located on the end of the closer body. Use a screwdriver or Allen key, and always make small adjustments (e.g., 1/4 turn) and test the door after each change.