Length: 2.25"Width: 2.25"Projection: .75"Center To Center Spread: N/AFinishes: Burnished Bronze, Pewter, Oil Rubbed BronzeArrives in an attractive boxNote: This is a decorative doorbell button. Does not include electric doorbell mechanism. For use in replacement of front entry decorative plate and lighted button only. Item connects to your existing 16 volt doorbell wiring.