Can hold door weights up to 40 kg – Pair of door closers (up to 20 kg per closer). A door closer should be installed in the middle of the door if only one is used. The door and door frame must remain in a horizontal plane with a maximum drop of 3 mm. Adjustable tension allows control of the door closing force. Requires a door frame with a minimum width of 3 cm. Simple to install and includes all necessary mounting hardware. Set includes 2 door closers. Suitable for various door types. Two-piece automatic door closers with silent spring operation and adjustable tension. Spring-loaded design works on left or right-handed doors up to 40 kg. Features: - Adjustable closing speed for smooth operation - Automatically closes the door for convenience - Reduces noise when closing - Helps protect doors and frames from impact Important Notice: 1. Adjust tension using a hex key by turning clockwise or counterclockwise to set closing force. 2. Install the closer in the center of the door when using a single unit. 3. Ensure the door and frame are level, with no more than 3 mm of sag. 4. A door frame with a width exceeding 3 cm is required for installation. 5. For doors weighing up to 40 kg, install two closers in an upper and lower configuration for optimal performance. What's included: 2 x Door closers