What is meant by the term “oval profile” handles?
A. Oval profile handles have an oval shape cut out of the back plate. This oval cut out in the back plate is used to house a key operated cylinder. The cylinder is used with a mortice sash lock fitted into the edge of the door which also has an oval cut into it to allow the cylinder to pass through the lock and come out on the opposite side of the door. These cylinders come in various lengths depending on the thickness of the door and various styles such as double key, key and turn, or single cylinder. When the key or thumb turn is operated, the deadbolt on the lock is thrown and the door is then locked.
