Simple, Strong & Effective Security Protection

Keep your home safe, sound and secure against intruders and home invasion with the Johnnylok®. The Johnnylok® follows your door's frame outside and uses the strength of your exterior wall to bar your door (when locked) from the inside. The Johnnylok is made from heat-treated annealed steel and is "knife blade hard" to resist tampering.

Will Johnnylok® Fit My Door?