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Enhance the security of your door with our patent-pending Paul's Positive Lock retrofit kit. This easy-to-install kit is a retrofit solution for a standard door chain guard, making access extremely difficult for intruders. In two easy steps utilizing just a screwdriver, you can quickly and effortlessly convert your standard door change guard into a secure positive lock. With our user-friendly design and easy conversion process, you can enjoy peace of mind knowing your door is protected.