What does 40mm backset mean?
‘Backset’ is the distance from the front of the lock to the centre of the spindle as shown here. Almost ALL domestic mortice locks and tubular latches are supplied with either a 44mm or 57mm backset length.
Can a 5 lever lock be picked?
A five lever mortice lock keep looks like this: Two and three lever mortice locks can be picked relatively easily, because tools can be inserted up into the lock from the key hole from where the burglar can manipulate the levers.
What is a 5 lever dead lock?
5 lever mortice deadlocks are a type of lock that is installed into the door material. The lock can be locked and unlocked using a key, and it has 5 levers to make it more secure. 5 lever mortice dead locks are available in a range of finishes, it can be used on both internal and external doors throughout a building.
Do uPVC doors have 5 lever locks?
The first thing you should know is that a 5 lever Mortice Deadlock is NOT found on uPVC & composite doors, look out for the below: 1. Wooden Door – You will have a Wooden/Timber door.
What is latch backset?
The backset is the distance from the edge of the door to the spindle mechanism on the latch. Usually for a 63mm case measurement it will have a 44mm backset and for a 76mm case measurement will have a 65mm backset. The backset you choose is where your door knobs will sit on the door (where the spindle goes through).
How do I know what size door latch I need?
An easy way to choose which latch you need is to measure from the edge of your door to the centre of your door Stile. Choose the Backset which is closest to this measurement, and the handle will be as central as possible to the Stile on your door.
What does Lever mean in locks?
Noun. 1. lever lock – a lock whose tumblers are levers that must be raised to a given position so that the bolt can move.
What is a night latch lock?
A night latch (or night-latch or nightlatch) is lock that is fitted on the surface of a door; it is operated from the exterior side of the door by a key and from the interior (i.e. “secure”) side of the door by a knob. Historically, such locks were intended for use at night-time, hence the name.
How do I know if my lock is a 5 Lever Mortice Deadlock?
You can often identify a five lever mortice deadlock by the following:
- The words ‘5 Lever’ engraved on the internal faceplate of the lock.
- Mostly found on wooden doors.
- Locks and unlocks from the inside and outside with a key.
- The lock sits within the frame of the door.