Overall Length: 565 mm Extension: 915 mm Maximum Door Weight: 40 kg features: Overhead sliding door closer Surface mounted sliding door closer for lightweight doors only Closing speed and closing power adjustment Applicable for doors that can be opened freely using 0.7kg of force or less. For fixing to existing sliding door systems To suit door sizes from 600-900 mm Door opens lightly and closes automatically Shuts out noise, gases, dust etc Timber or metal doors Non Fire Rated Finish: Sliver