Offering the highest security, the Master Lock No. 1690 Built-In Combination Lock is designed for single point Wrap Around Latch™ lockers and is intended to tolerate locker misalignment making installation easier. New stylish, octagonal dial with larger dial numbers provides easy grip and standard key control, used for combination changes, allows quick supervisory access. Five different pre-set combinations provide longer, useful life in your facility. Customization options are available along with ADA compliant models.