Bell measures 3-1/8" L x 4-3/8" H, with 3-1/2" centers.
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Twist plate measures 1-5/8" L x 3-1/4" H, with 2-5/8" centers.
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No wiring system required.
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Mounts directly to entrance door.
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Fits doors with standard thicknesses of 1-3/8" to 1-3/4".
Add this ornately decorated doorbell to your home for a touch of antique flair. The twist function works without any wiring system and produces a ring loud enough to be heard all over the house.