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Hooklock Protect Plus

More strength, more protection, more control. Like the Deadlock, the HookLock puts you in control with a secondary mortice lock that works completely independently of the manufacturer’s main system. Also, like the Deadlock, the Hooklock is operated by a high-security key. 

The key difference is that it works by throwing a hook into a specially designed keep, making it incredibly difficult to force apart. And should anyone try, this extra layer of security will give them a headache, while you have peace of mind.