Lockwood Satin Chrome Pearl 001 Double Cylinder Deadlatch Knob

The Lockwood 001 Double Cylinder Deadlatch is a high-security knob deadlatch for inward opening entry doors. Key operation from both sides gives maximum security, with hold-back function for passage use when you're at home. 11 concealed anchorage points plus a door frame strengthener resist forced entry. LockAlert® shows lock status at a glance, and SafetyRelease™ automatically unlocks the inside knob on key entry from outside. Built around a cut-resistant stainless steel bolt with 18mm projection, brass 5-pin cylinders (78,000 key combinations), and Kinetic Defence® bump and pick resistance. Supplied with a open out (timber framed) strike to suit. Fits doors 30-45mm thick. Tested to AS4145.2-2008 (SL7 security, D8 durability). Features: - Double cylinder deadlatch suited to timber or metal frame doors. - Automatic latching when door closes; keyed both sides for high-security egress. - Tested to AS4145.2:2008. Backed by Lockwood, an Australian brand with over 90 years of locksmithing experience.