Watch our "How to fit a Mortice lock"
These door locks are all compliant with BS3621 which is also compliant with insurance requirements.
The DSB8225 security bolts are not BS3621 rated but are a welcome addition to any wooden back door as they are not visible from outside, please remember that the DSB8225 only operates from inside the house.
Rebate sets are for fitting with a sash lock to a double door, the double door must have a 12mm rebate, need to know what a rebate is? See item 2 here.