The Design House 783191 Ball 2-Way Latch Dummy Door Knob is mounted without a latch and does not turn like traditional knobs. Finished in polished brass and designed for left or right hand doors, this knob has 2-holes in its 2-5/8-inch (T) plate for mounting to French doors or doors with a ball catch mechanism. This dummy knob has a traditional design with a ball shaped knob. The knob extends 2-7/8-inch outward and fits the two most common backsets in the U.S. (2-3/4-inch and 2-3/8-inch). This product is ANSI Grade-3 certified, which means this deadbolt is rated for residential security.