Providence Crystal Glass Door Knob Set with Rice Pattern Backplate - Octagonal knob measures approximately 2 3/8 inches in diameter and has a projection of 2 1/8 inches. Rectangular backplate measures 6 inches tall and 2 inches wide. Single sided and double sided dummy options can be used with or without a borehole, if no borehole is present countersinking may be required. The dummy door knob is a fixed knob with double rosettes and is commonly used on French-style or bi-fold doors. 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. Functional door knobs come with a standard 2 3/8 inch back set latch, 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.