The Yale M550 5 Lever Mortice Sashlock is ideal for wooden doors that have handles. The lock is ideal for doors that require a high level of security as the 5 levers required to turn by the key offer a high level of security protection giving you peace of mind when you leave the house. The sashlock is deadbolt and unlocked by a key from either side therefore requires two handles. This deadbolt is anti-saw for added protection. Some of the benefits of 5 lever sashlocks include the number of configurations possible due to the number of levers, thus meaning that the less complex configurations are discarded and not used, ensuring that ever lock is sufficiently diverse. Designed to accept bolt-through furniture which means it allows for a secure, firm fit for the door handles onto the door and the handles do not require screws to hold it to the wooden door. 2 keys supplied. Security for all doors Mortice locks not only come in two different styles, but also in different security strengths. This mortice sashlock is rated high security meaning it has a two year gurarantee. The 5 lever mortice lock contains 5 levers which the key turns to open the lock. Style & Colour Customise your door with multiple finishes and colours. This lock is deal for use on an external wooden door when used with a door handle. 5 Levers 5 levers means the lock granted a high security status. The five levers are moved into position when a key is inserted and then turned into the lock. The sash lock will require two door handles.