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3-lever sashlock upgraded to British Standard 5-lever

Lock upgrades November 2025

This back door still had an old 3-lever rebated sashlock, which many home insurers won’t accept on a final exit door.

I replaced it with a British Standard BS3621 5-lever rebated sashlock and fitted a new keep in the frame so the bolt throws fully and securely. The handles were kept, so the door looks the same but now meets insurance requirements.

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