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Protect your home and live with peace of mind. The Door Guardian in-swinging door lock does just that. Our door lock device is an affordable and effective home safety solution. Built with strength and durability in mind, this lock secures and reinforces any in-swinging door against high-force impact and resists forced entry through exterior doors. It's quick and easy to install in under ten minutes by attaching the 3M high-bond tape side of the lock to the door frame, and further securing with the included screws. The lock is able to secure doors in homes, condos, apartments, dorms, and more. It can be applied on front doors, side doors, back doors, garage entrance doors, balcony doors, patio doors, bedroom doors, French doors, and double doors. Our lock can also provide additional safety for parents looking to childproof their home. The optional safety insert prevents children from opening the lock without the key insert. It has also been used to provide safety to children or adults with special needs as well as adults with Alzheimer's who may attempt to wander. Its low-profile design blends discreetly onto all doors without damaging or altering the door or door frame. It's now easier and simpler than ever to feel safe and reassured with a Door Guardian in-swinging door lock.