This Stainless Steel Floor Spring with Hold Open is capable of adjustments between EN 2-4 through step less governor, providing high efficiency and personalized opening and closing forces. It is a versatile choice, suitable for right, left, or double action doors made of various materials such as timber, metal, and glass. Ideal for all types of doors, both external and internal, it offers a wide range of adjustments within a cement box to quickly solve alignment issues on site without removing the door. With a hydraulic control, it allows for a 180° opening in both directions, with the option to hold open at 90°, 105°, or any angle ranging from 150° to 180°. The non hold open version also has a back stop at 150° for added security. The closing speed is easily controlled by two thermostatic valves, providing a soft closing or a powerful latching action to ensure proper closing, even for difficult locks.