Abloy's High Security Lockable Thumbturn Deadbolt is a ANSI Grade 1 deadbolt that is the best product for most high security installs. Merging the security of a double deadbolt with convenience of a normal thumbturn deadbolt. The thumbturn on the inside can be locked to make it function like a normal double deadbolt (key to operate on either side) or unlocked to allow operating by hand.
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Reviewed in the United States on September 30, 2013
If you have a need for high security locks, you can't go wrong with the protec2 locks. The protec2 locks are very solid and to date have not been picked or bumped. These locks have both an inside and outside key. The inside key makes it so that you can lock the thumbturn and then you can't open the lock from the inside or the outside without the key. This is a really nice feature for when we go on vacation as it allows us to lock the door from being opened on either side. The locks are Grade 8 hardened steel