Era Fortress Mortice Sashlock Satin 63mm Option:Satin 63mm Inside handle can be deadlocked Inside handle can be deadlocked by a reverse turn of the key in the cylinder Snib function enables the latch to be held back or deadlocked internally Keyblank number: B 1109 KEY Resistant to water The British Standard High Security Mortice Lock meets the new BS 3621:2007 standard which meet the exacting demands of the insurance companies and the police 1000 key variations High security levels are delivered by a 20mm bolt throw on every lock All locks have hardened steel plates to resist drilling False notching in levers resist lock picking Interior & Exterior Material: Steel & Zinc Alloy Fixings included 10 year guarantee and warranty