BZP Winkhaus AV2 Heritage LockFor replacement period doors and prestige new build doors. 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 a euro profile thumbturn cylinder which is located at approximately of the door height to replicate the rim locking night latch found on traditional