General description Can hold door weights up to 40 kg - Pair of door closers (up to 20 kg - 1 door closer). Suitable for different types of doors. Technical specifications Maximum door weight: 40 kg (20 kg per closer) Minimum door frame width: greater than 3 cm Drop tolerance: must not exceed 3 mm Installation Must be installed in the middle of the door if using one closer Simple installation with all required fixings included Usage Adjustable tension to control door closing force Use the hex key to adjust by turning clockwise or counterclockwise