Length: 328 mm Width: 82 mm Height: 54 mm features: SDS 550NV Variable Action Floor Spring Mechanism and box only For single and double action doors Certifire approved CF 259 CE approved :3:5:3/6:1:1:4: Large door adjustment range Height: 6 mm Lateral: 10 mm Length: 10 mm Variable adjustable EN 3-6 closing force guarantees flexible use even for great wind loads or heavy doors With backcheck Safety valve prevents overloading Overall depth of only 54 mm - utilisation also possible for existing doors Leaf weights up to 300 kg are possible Leaf widths up to 1400 mm for ideal passages Adjustable latching action guarantees secure closing Closing range from 175 degrees All adjustments - even the closing force - are possible from above Convenient and secure for the user Progressive hydraulic hold-open between 80 - 165 Integrated closing delay prevents the door from closing too quickly e.g. facilitates goods transport Integrated back check prevents damage and/or the door from slamming open uncontrolled