LocksOnline Imperial Full-Size Euro-Profile Mortice Nightlatch

With a choice of 48mm, 51mm or 57mm centres, the Imperial 7008 mortice nightlatch range is designed to accept a euro-profile cylinder which allows you to operate the latch via key as well as via the handle. 

As this is a mortice nightlatch and not a sashlock, the idea is that the door latches automatically and cannot be unlocked without a key.  Therefore you would typically have no operable handle on the outside, just a push-plate or pull-handle, so access can only be gained by the use of a key.  On the inside then, you can have a lever handle to operate the latch if you wish, so that you are always free to exit, or more popularly, use a thumbturn on the inside - it all depends on your requirements.

For entry via key, with keyed exit from the inside as well, you would choose a double-euro cylinder, offering key operation from both sides, and use no operable handles at all - just a set of push / pull handles.

However the more popular choice is to have keyed entry, with a thumbturn for free exit - in this case you would need to go for a key & turn euro cylinder, or a half cylinder with the Imperial thumbturn snib on the inside, so that while still only gaining entry via key from the outside, you can open the door from inside using the thumbturn side of the cylinder. 

There's a third option too, which is to get a handle for the inside, which will always operate the latch, and use a sprung half-spindle to engage with the lock.  However we usually advise to use the previous method (key & turn cylinder) and then secure a solid pull-handle rather than relying on screw-fixings on a single lever handle.

All these options have their suitable uses in specific applications, which one you choose will be entirely up to you.  We have listed an array of our cylinders as options below, which can be master-keyed and keyed alike free of charge, and as part of our registered patent-protected key profile, we can ensure only you can obtain key copies too!

Imperial Locks are built to order! Please allow additional time to complete these locks before dispatch.

These locks are fire-tested to BS EN 1634-1:2000