Solid Brass Art Deco Fanfare Door Knob Set - Each knob measures 2 3/4 inch tall by 1 7/8 inch wide with a 2 1/4 inch approximate projection. Constructed from solid brass and hand finished. 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. 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.