Ray-Tone Doorbell designed by Atomic Foundry in the mid century style. Powder coated in a variety of color options. Powder coating provides a highly durable finish that resists scratches. Solid cast from zinc alloy. Will not tarnish Will not rust Dimensions: Width: 1 1/8 H: 3 3/4 NOTE: All Ray-Tone push button doorbells require a 5/8 diameter mounting hole to accommodate the rear wiring portion of the button. If you have installation questions, please ask prior to purchase. Atomic Starburst Doorbell Powder Coated