Steel keepers and steel chain secures door while allowing viewing and ventilation. Includes 1 chain lock with keeper and installation screws. Prefix U on factory number denotes new Defender Security packaging.

Brass keepers and steel chain secures door while allowing viewing and ventilation. Includes 1 chain lock with keeper and installation screws. Prefix U on factory number denotes new Defender Security packaging.

Steel keepers and chain. Secures door while allowing viewing and ventilation. Includes 1 chain lock with keeper and installation screws. Prefix U on factory number denotes new Defender Security packaging.

Solid brass keepers with steel chain secures door while allowing viewing and ventilation. One 5/8 in x 2 in keeper and one 3-5/16 in x 1-3/8 in keeper. Prefix U on factory number denotes new Defender Security packaging.

Solid brass keepers with steel chain secures door while allowing viewing and ventilation. One 5/8 in x 2 in keeper and one 3-5/16 in x 1-3/8 in keeper. Prefix U on factory number denotes new Defender Security packaging.

Plated steel chain and die-cast keepers secures door while allowing viewing and ventilation. Can be unlocked with key from outside or inside. Bolt slides into keyed mechanism to lock. Includes 1 chain lock, 2 keys and installation screws. Prefix U on factory number denotes new Defender Security packaging.