Exterior Entry Doors are designed and built specifically to accept a multi point locking system. The Security Automatic Door Lock, European technology in a North American lock. By simply closing the door the upper and lower 3/4" (20mm) latches will instantly engage. By turning the key from outside or the knob from inside it will engage the 1" central deadbolt and block the top and bottom latches to become a 3-deadbolt locking system.
The Advantages
Lock System Styles