Atrium Door Mortise Lock Trim Set
4 -1/2 Inch Solid Brass Levers.
Single cylinder lock uses re-keyable Schlage SC-1 keyway with 2 keys, and thumb-turn inside.
Spindle for handle is 5/16 x 3-1/4 Square.
The distance from the center of the handles to the center of the cylinder 3-5/8 inches.
This is original Atrium lock hardware and includes everything including screw.