Double Ball Catch for Aluminum Profile Door Lock  Catches and Locks For economy series European standard Economy series aluminum profiles Catches and Locks suitable for fixation between profiles.  Compared with normal Catches and Locks, they are easy to mount because the profiles can be easily fixed by screws and nuts without additional punching. Model NO.:dfh-0700A Installation:Wall Mounted Structure of Electromagnetic Door Stop Normalized:Working Principle Aluminum Profile:Control Manual:Punching Usage:Normal Door, Fire Door, Glass Door N-Magnet:30/40 Series Door Lock:Universal Double Ball Catch