Advertise with confidence under lock and key, with these sturdy and stylish all aluminum key lock boxes. Make a great encasement for your sign board, like interchangeable letters boards or to pin up your advertisement, menus, transparencies, information, employment/safety posters, movie theatre advertments or even as jewelry showcase. Available in black or satin anodized finishes, includes clear plastic door face, smooth operation key lock with two keys and chipboard backing. (Additional prices will apply if cork backing required)..