The key to success is getting the hole for the cylinder in the right position.
Fitting front door lock.
A 5 lever mortice deadlock conforming to bs3621 will have the british standard kitemark engraved on the faceplate of the lock and operates the same way as a standard 5 lever mortice deadlock.
If you don t get this precise the lock may not fit properly.
5 lever mortice deadlock conforming to bs3621 more secure type of front door lock back door lock.
Take care with the marking out and drilling to ensure excellent results.
Fitting a front door rim lock fitting a rim lock the yale type lock on your front door is fairly straight forward.
Before purchasing a lock measure your door s backset cross bore and thickness to ensure you find the right fit.
The distance between the edge of the door and the center of the lock hole.
For front doors it is best to fit two locks a mortice deadlock about halfway up and a night latch one third of the way down the door.
Where the door is self closing the latch has an angled or rounded edge and is sprung so that it automatically locks when the door is closed.
Interior doors are usually fitted with a mortise lock with a latch operated by the door handle or knob.