The 564 Series is a unique overhead door closer with rack-and-pinion technology and integrated hold open device. It has a universal design for regular mounting (pull side) or reversed mounting (push side) and variable closing force sizes 2-5 accoding to EN 1154 standards. It is suitable for 850-1250 mm wide door leafs. The integrated hold open device is easily adjustable precisely to the desired angle. It is not suitable for fire-rated doors. Equipped with thermostatic valves for indipendent hydraulic control of closing speed and final latch. The latch angle is easily reduced by turning the forearm, up to its elimination (soft closing). The possibility to ensure a powerful latch also from an arc of just a few degrees guarantees reduced noisy action in case of hard-to-latch locks.