Auth Florence, Non Electric, Mechanical Door Chime, Doorbell and Viewer #689 (Gold Powder Coated Metal)
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<b>[Product Information]</b><br>
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<li>High quality, maintenance free, no wiring, no batteries, one way viewing mirror.</li>
<li>Designed to fit wood and steel doors up to 4-3/4" thick.</li>
<li>Requires to drill 5 holes through the door.</li>
<li>Mounting and fastening hardware includes only screws for wood doors.</li>
<li>We manufacture and include self drilling screws for steel doors. (see the self drilling screws in the pictures above).</li>
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