The glass knobs measure 2 3/8 inches in diameter and it has a projection of 2 1/8 inches. Solid brass rosette plates screws directly into the door with four wood screws and measures 8 inches tall and 2 1/2 inches wide.This door knob set is available in several finishes and functions. Passage (Hall/Closet) and Privacy (Bed/Bath) sets come complete with the functioning hardware and a 2 3/8 inch back-set is standard. A 2 3/4 inch back-set is also available upon request. This particular product has a lead time of approximately 1 to 3 business days depending upon the finish.