The Serval is a compact spring hinge with force adjustability which will tighten or loosen the spring inside the barrel to change the closing speed of the gate. The fiberglass reinforced polyamide housing protects the high-tech internal components, allowing for perfect functionality in all weather conditions. Its 13/16" vertical and horizontal adjustability ensures an easy and flexible installation. Firmly fixed with self-drilling screws - no welding required. Suitable for installation on square and round frames. 180° spring hinge with force adjustability Fiberglass reinforced polyamide housing For left and right turning gates Fast and easy fixing with self drilling screws Force adjustability from 2 up to 7 Nm (at closed position) Easy to open: Max. 10 Nm 13/16" horizontal and vertical adjustability Maximum gate width is 4 feet using these hinges Maximum gate weight is 132 lbs ADA, PMR, & ROSPA Compliant For profile dimensions, see the downloads tab on this product page