High Security Nightlatch with integral cylinder pull which protects the cylinder from being drilled, and comes with a 20mm bolt throw for increased security and strength. The cylinder lock has over 30,000 cut key variations. The main lock bolt of the nightlatch “automatically” deadlocks, making the use of a credit card to force entry virtually impossible. The bolt can also be held in the withdrawn position yet only with the use of the snib feature
High Security Nightlatch conforms to British Standard 3621:2004 and meets the tough criteria laid down by the insurance companies and police.