Emtek Passage Set, Rectangular Rosette, Norwich Knob Fits any door between 1-3/8” to 2-1/4" thick with a 2-1/8" bore standard door prep Standard latch is for 2-3/8" backset. Specify 2-3/4" backset if required Sold as complete set. Includes Latch and Strike Plate Emtek Passage Set, Rectangular Rosette, Norwich Knob - Fits any door between 1-3/8” to 2-1/4" thick with a 2-1/8" bore standard door prep* - Standard latch is for 2-3/8" backset. Specify 2-3/4" backset if required Sold as complete set. Includes Latch and Strike Plate