What does 3 lever lock mean?
3 Lever Locks The three-lever sash lock is designed for internal doors in domestic properties. These locks are best suited for doors needing to be locked for privacy purposes, but where high security is not required – it has fewer levers and therefore key duplication is much easier.
Are all 3 lever locks the same size?
Whilst not all locks follow the same template, nine times out of ten, other measurements can be correctly assumed based on the case depth. There are many different case depths but the most common sizes are 64mm and 76mm. This is the metric equivalent to 2.5″ and 3″ lock cases from back in the imperial days.
Is a 3 lever lock secure?
The difference between a 3 lever lock and a 5 lever lock is that a 3 lever lock is less secure because it has fewer levers which increases the risk of key duplication. Also, a 3 lever lock will NOT be BS3621 approved due to the poor security of the lock.
How do lever locks work?
How does a lever tumbler lock work? A lever tumbler lock features a series of levers, normally three or five, that are pushed into the correct height to release a bolt. They typically use a bitted key which has a flat surface to push the levers into the correct position to allow the door to open.
What is a 3 lever mortice lock?
The 3 Lever Sashbolt Mortice Door Lock is a classically designed, low cost sashlock, which offers additional security for internal doors and outside applications such as sheds. The sashbolt is to be operated by a handle. Available in 64mm (2 ½”) and 76mm (3″) and in both brass effect and satin finishes.
How do you measure a lever lock?
Backset is measured from the centre of the keyhole to the edge of the lock. Most backsets are commonly measured at either 44mm (for a 64mm (2½”) lock) and 56mm (for a 76mm (3”) lock). Typically a lock adjacent to a glass panel will be 2½” (44mm) and otherwise 3” (56mm), but you should always measure to be sure.
How do you know how many levers a lock has?
You can check this by looking on the faceplate of the lock, the number of levers should be stamped there. For optimum security the 5 lever mortice lock should be Kitemarked and conform to BS3621. If it is, these details should be stamped on the lock faceplate.
What is a tumbler in a lock?
In lock: Development of modern types. … in England, patented a double-acting tumbler lock. A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt.
What is a multipoint lock?
What is a key-operated multi-point locking system? A multi-point locking system bolts the door into the frame and locks at multiple points at the turn of a key, offering you a high level of security. It’s common in more modern houses as you’ll usually find this type of lock on UPVC and composite doors.
Are lever locks still used?
Lever locks are used extensively in the doors of residential homes as well as commercial buildings. Some homeowner’s insurance companies even require their insured customers to have lever locks on all their doors. It’s an otherwise basic precautionary measure that protects against break-ins and intrusion.
What is the difference between a 5 lever and 3 lever lock?
What Is The Difference Between a 5 Lever And 3 Lever Lock? From the different types of door locking mechanisms the main difference between the 5 lever lock and the 3 lever lock is that the latter has fewer levers which make it less secure as there is a higher risk of key duplication.
How do you open a lock with 5 lever locks?
Open with a key – the lock can be opened from both sides with a key. Lock fitted in door material – rather than being fitted on the surface, the lock is fitted into the leading edge of the door. 5 levers – the number of levers is typically stamped on the lock’s faceplate. What Is The Difference Between a 5 Lever And 3 Lever Lock?
Can a 5 lever mortice lock be used on a door?
It’s important to note that the 5 lever mortice lock is not found on composite and uPVC doors, look out for the below: Open with a key – the lock can be opened from both sides with a key. Lock fitted in door material – rather than being fitted on the surface, the lock is fitted into the leading edge of the door.
Which 5 lever locks are suitable for external entrance doors?
External entrance doors are usually more vulnerable to attack and so may be seen as a greater security risk so make sure insurance approved 5 Lever locks are fitted with the BS3621 stamp. A few examples within our store are the 5 Lever Insurance rated sash lock ref:JL127 and Dead lock version ref:JL117.