This Mortise Door Opener Is A Dependable Long Service Device, Providing The Security and Convenience Of Remote Control Door-Lock Operation. The Units Flush Mount In Place Of The Regular Door Strike Plate and Will Witshand 35 LB (15.88 KG) Nosing Pressure. Door Remains Locked Until The Opener Is Electrically Acuated. Fits Left and Right Hand Doors. Painted Brass Faceplate and Nosing.