Emtek 6620 #16 5-1/2" C-to-C Keyed Sideplate Lockset, Passage/Single Keyed - Lost Wax Cast Bronze Tubular Can be ordered with any Sandcast Bronze Knob or Lever Style Sold as complete set. Includes Knob or Lever, Latch and Strike Plate One Standard 2-1/8" Door Prep Standard latch is for 2-3/8" backset. Specify 2-3/4" backset if required Handing required for Leverset Specifications:Backset: Adjustable 2-3/8" or 2-3/4"Cross Bore: 2-1/8"Door Thickness: 1-3/8" to 1-3/4"Latch Faceplate: Round or Square CornerMaterial: Brass