Sterling deadlocking nightlatch (Standard #89) GRY
Suitable for wooden doors between 35mm to 60mm thickness.
This deadlock can be locked from the inside with the snib but it can also be deadlocked from the outside by the full turn of a key.
It has a solid brass 5 pin tumbler mechanism, which can be used on both right hand and left hand opening doors.
The deadlock comes with a 10 year guarantee.
BLANK FOR THIS LOCK IS KB003