Are you talking about the useful hole for the Juda? Between 14 and 22 mm? Is the screen held by the peephole?
Galaxus
9 months ago
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The "Drilled" fixing type means that the product requires a hole to be drilled for installation, usually in a door or wall, to secure the doorbell or spyhole firmly in place. This provides a stable and durable fixing, preventing accidental movement or displacement of the device.