Emtek Classic Brass Knobsets with Designer Rosettes – Norwich Knob, Privacy Set Can be ordered with any Brass rosette Sold as complete set. Includes Latch and Strike Plate 28 Degree Latch (included when CF Mechanism is selected) 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 * STRETTO rosette requires a 1-1/4 diameter bore hole and 2-hole door preparation for thumbturn privacySpecifications: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