Designed for timber external doors, the Yale P1 Double Security Nightlatch offers high-security access control with key operation from the outside and key or lever handle operation from the inside. It is also suitable for glass panelled doors, making it a practical choice where you want added reassurance without compromising on everyday ease of use. For increased security, the internal handle can be locked, while the latch automatically deadlocks when the door is closed. A snib function (bolt hold back button) allows the latch to be held back when required. The lock features a 5 pin high performance cylinder and a 20mm anti-carding bolt, and is supplied with a 1109 external cylinder. Backset is 60mm, measured from the edge of the door to the centre of the keyhole. A 2 year guarantee is included. Key features Suitable for timber external doors and ideal for glass panelled doors Key operated from the outside Key and lever handle operation from the inside Lockable internal handl...