This knob measures 2 5/16 Inch with a projection of 3 inches. The Rosette measures 2 7/8 Inch diameter. Comes with mounting hardware. This style is available as a single sided dummy knob (1 fixed knob), double sided dummy knob (2 fixed knobs), functional passage (non-locking) and functional privacy (locking) sets. Constructed from solid brass and hand finished. Functional door knobs come with a standard 2 3/8 inch back set, or you can request a 2 3/4 inch back set at no extra charge. This particular product has a lead time of approximately 1 to 3 business days depending upon the finish.