For both replacement period doors and prestige new build doors. Features: The euro profile locking cylinder of AV2 Heritage is located at a similar height to a traditional round cylinder pull but provides instant higher security as the lock is operated automatically as soon as the door is closed Simply operated with just a euro profile thumbturn cylinder which is located ay approx. 2/3 of the door height to replicate the rim locking night latch found on traditional doors An external lever handle is not required to operate the locking points and the lock can be deadlocked or opened externally by turning the key a quarter of a turn The door is automatically locked when closed from the inside and the key is required to gain entry from the outside Automatic locking on closing the door with 2 solid anti pushback hooks which fully penetrate the steel keeps helping to prevent forcing a part of the door and frame Please note 1 x euro profile thumbturn cylinder needs to be purchased separately