Lockwood 001 Double Cylinder Deadlatch Rimlock - The Australian-designed Lockwood 001 Deadlatch offers market-leading performance and reliability for your home and is available in both Knob and Lever versions. The 001 Deadlatch features a cut-resistant stainless steel bolt, 11 concealed anchorage points and a door frame strengthener that combine to offer high security protection. - Additional features include a bolt holdback function that allows you to use your door in passage mode. The Lockwood 001 Deadlatch offers Kinetic Defence to resist attempts at lock picking or bumping. The Lockalert interior indicator shows the lock status at a glance, combined with the Safety - Release which minimises the risk of being locked inside.FeaturesKnob style turn - Bolt holdback function activated by external key or internal knob - Backset 60mm - Suits door thickness 30mm to 45mm - Stainless Steel latch with 18mm projection - Standard metal frame strike included3mm packers available to order separately - 001-3254BLKCan be key locked in holdback position by key from inside - Supplied individually keyed with two keys per lock78,000 possible key combinations - Key blank KB2015PCan be keyed alike to other Lockwood door locks - External cylinder included - Retrofitable to your existing 001 Deadlatch - Supplied in trade pack as single lockKeyingRestricted Special Keying Lockwood locks can be keyed to a number of controlled and specially keyed systems. These range from legally protected keys to protect against unauthorised duplication, which can also include specially designed key systems such as master key systems, which allow for different levels of mechanical access control.