The Yale M560 high security sashlock is insurance approved and offers the maximum level of security for external wooden doors with handles. The deadbolt is locked and unlocked by key from either side and the latchbolt is withdrawn by lever handle from either side. It offers 5 lever security and is pierced to accept bolt through furniture. It is Secure by Design approved, insurance approved and British Standard kite-marked to BS3621. The Yale M560 high security sashlock is highly recommended by insurance companies and police and comes with a 10 year guarantee.