Security chain fitting
A door chain provides a supplementary way to limit opening when speaking to a visitor.

Security chain fitting — install the chain to suitable door while frame material, with site access, working hours and protection requirements planned, with the glass specification, dimensions and access route agreed.
Choose a fitting appropriate to the door material and opening direction. The primary lock and the condition of the entrance remain separate security considerations.
The detail that matters
Does a chain replace the main door lock?
No. It provides a limited-opening function and is not a substitute for the entrance's main securing system.
Before the work
is agreed.
Does a chain replace the main door lock?
No. It provides a limited-opening function and is not a substitute for the entrance's main securing system.
What needs checking before installation?
Confirm sound fixing areas, the opening direction and any restrictions affecting the particular doorset.
What should I include in this enquiry?
Send views of the complete doorway and affected fittings, with the postcode and any product label. Explain whether the fault occurs during opening, closing or locking and whether another entrance is available.
Security chain fitting by area
Select a place to view this service for that location. Please provide the postcode when you enquire.