This British Standard TSS 5 lever mortice deadlock has been designed with the same dimensions as the Union 3G114E mortice deadlock and can be used as a retrofit product.
These TSS mortice dead locks ...
The Tessi 6410 shutter lock is usually installed in the centre of the door. Both side arms extend when operated, these are linked to the shutter's locking bars, these lock the shutter into both sides...