Description
Yale P85 Deadlocking Nightlatch 40mm Satin Chrome
Genuine Yale deadlocking nightlatch for compatible timber entrance doors. This model has a 40mm backset, measured from the door edge to the centre of the outside cylinder/keyhole. This listing is for the Satin Chrome finish.
Choosing the correct replacement
- Match the existing backset and lock case dimensions before ordering.
- Check door thickness, handing and cylinder compatibility.
- Confirm the required finish and whether the replacement is for a complete lock or existing installation.
- For doors requiring a specific British Standard or emergency-escape rating, verify the certification of this exact model.
Designed for surface mounting to compatible doors. Installation should follow Yale’s fitting instructions and the requirements of the door.


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