Emtek 4444 STRETTO Narrow Trim Lockset, 1-1/2″ x 11″ Arched Keyed, Brass Tubular, Single Cylinder Can be ordered with any Brass Knob or Lever Sold as complete set. Includes Latch and Strike Plate Narrow 1-1/4″ Door Preps, 3-3/8″ C-to-C Hole Spacing Supplied with 28 Degree Latch Standard backset is 2-3/8″ backset. Specify 2-3/4″ backset if required. Handing required for Leversets Specifications:Backset: Adjustable 2-3/8″ or 2-3/4″Height: 10″Width: 2″Door Thickness: 1-1/4″ to 3″Bore Hole: 1-1/4″Plate Thickness: 3/4″