Imperial 3 lever mortice locks feature the longest throw of any 3 lever mortice lock at 16mm and the locks feature 100 standard differs.

In line with a number of other mortice locks, these locks feature a black lock case but they have unique measurements that identify them from other mortice locks. Please refer to the line drawing for details.

This mortice lock is available in either polished brass or satin chrome finishes in boxes.

The 3 lever range from Imperial includes a deadlock, sash lock, horizontal lock and bathroom lock to provide a complete, interior door solution.

The deadbolt throws 16mm. If additional protection is required against attack by sawing, we’d recommend a 5 lever version with attack prevention features.

The deadbolt can be locked and unlocked from either side by use of the key. The latch is withdrawn from either side by moving the handle

This lock is supplied with a striking box in a finish which matches the lock.

Suitable for use on most internal wooden doors. These locks are not handed and can be used on doors hinged on the left or right, which open inwards or outwards.

Supplied with 2 steel keys as standard. We can cut additional keys for this lock, just select whether you’d prefer genuine or copy key blanks and the quantity required from the associated products on this page.

Should you require more than one lock to work on the same set of keys, these locks can be keyed alike by our inhouse locksmith team. We can typically dispatch the same day (larger quantities may require longer).

We stock a range of associated parts to these locks, including key blanks. Please select the products you require from the associated products on this page.

These locks are CE marked and tested to BS EN 1634-1:2000 for use on 60 minute fire doors. CE marking is the European standard which will eventually be replaced by UKCA marking. Please check before buying to ensure that the locks comply with the legislation in the market that you plan to fit them in.

Please always check the relevant fire assessment, door specification or with the relevant authorities that this product is suitable for use in the specific environment that it is fitted in. You can find more details about the product on the DOP.

These locks do not feature an escape function and can be locked from the outside which may make them unsuitable for use in certain environments.

Imperial locks (formerly known as Guardian Locks) proudly make their locks in the UK. They are an excellent choice for where you clients require high quality, durable locks. Their range is huge and they offer some sizes and operations that other manufacturers don’t.

3 Lever mortice deadlocks are commonly fitted to internal wooden doors. They are locked from both the inside and outside with the key which throws the deadbolt. Mortice lever locks (sometimes called mortise locks) are commonly fitted to wooden doors but can also be found used in steel, aluminium, and composite doors. They are locked from both the inside and outside with the key which throws the deadbolt. By definition, a mortice lock is fitted (“morticed”) within the door, rather than being fitted to the face or surface of it.

There are multiple types of lever lock in use in the UK. Dead locks (mortice dead locks) are operated by a key only whereas sash locks (mortice sash locks) feature a dead bolt and a latch which is operated by a handle (often a lever handle). Both lever locks with throw the dead bolt into a strike plate. The strike plate on sash locks also accepts the sprung loaded reversible latch.

Lever mortice deadlocks can be used for fitting to front or back doors and to internal doors and external doors, but we’d always recommend fitting a British Standard BS3621 product to external doors for maximum security. You should also check with the houseowner’s insurer’s requirements on both residential properties and commercial properties. You may find lever locks fitted to commercial properties but cylinder lock cases operated by a cylinder or pin tumbler lock are more common mortice locks fitted in commercial environments.

Lever mortice door locks are commonly used for internal doors too. These tend to be 3 lever mortice locks where the requirements for security and burglary prevention are lower.

When replacing an existing lever mortice lock, you may find that your replacement mortice lock is larger than the one that you are replacing. This may be because you are improving security, such as upgrading to a lock with thicker, anti-drill hard steel plates or because the forend length, forend width or the design of the lock has changed. The hole for the lock can normally be made larger with a hammer and chisel. This can also be the case for strikes, which may have changed design.

When fitting a lever mortice lock to new timber doors, we’d recommend using Souber’s DBB morticer for quick results.

Please always ensure that your door is sufficiently thick to accommodate the mortice lock that you are fitting. The Master Locksmith Association recommend a minimum thickness of 44mm.

A lever mortice lock prevents a door from opening by throwing a bolt from the lock into a metal keep or strike, fitted to the frame. Once the bolt is engaged in the keep, a hinged door is prevented from being opened. A mortice lock bolt is locked or unlocked from either the inside or outside by a key. Inside the lock, there is space for the bolt to be retracted. If the cuts in the key match the levers inside the lock, the user will be able to turn the key to throw (to lock) or withdraw (to unlock) the bolt. If the wrong key is used, the levers will not line up and the lock will not operate.

Get Door Locks stocks a huge range of mortice locks at all levels of security. All of our lever mortice door locks are available for delivery in as little as 24 hours. We offer a range of express delivery options as well as standard delivery and you can find delivery details on our thousands of products on our delivery info page.

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