𝐄𝐚𝐬𝐲 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧: Hornbill M8 smart door lock is compatible with most standard US&CA deadbolts. 15-minute easy install no extra drilling required. Door Thickness: 1-3⁄8"~2-1/8" (35mm~55mm).
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