Atrium Door Hardware, Lever Style Mortise Lock Polished Brass

  
Levers: 4 -1/2 Inch Solid Brass Mortise Lock Backset: 1-3/4 inch (45mm) narrow stile Door thickness: 1-3/4 inch Lock faceplate measures: 15/16 by 9-5/8 inches. Handle Escutcheon Plate: 1-3/16 x 8-1/4 Flat, 3 screw holes, solid brass Cylinder Type: Single cylinder lock, Crescent thumb turn inside. Atrium Keyed Cylinder: rekeyable Schlage SC-1 keyway with 2 keys Spindle for handle: 5/16 (8mm) x 3-1/4 inch (83mm) on the Square.

Distance from the center of handles to center of Cylinder 3-5/8 inches (92mm) Handing: This handle set can be used in Left and Right hand applications.