This chain door guard is constructed of a steel chain, diecast housing, plate and keeper, and it comes in antique brass-plated finish. Lock engages by allowing the bolt to slide into the keyed mechanism to lock. Uses a B1 keyway, ILCO (1098M). This chain door lock allows a door to open slightly for safe viewing and ventilation. Installation of this lock placed out of children's reach will help prevent them from opening a door themselves to enter or exit into dangerous areas. All installation fasteners are included, and it can be used on a variety of door types, on or beside the door casing.

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