Our product lines include electromechanical deadlocks and deadlatches, electric strikes and exit devices for exterior and interior doors as well as integrated door assemblies.Our products are designed to complement the clean lines of modern doors, while at the same time meeting safety and access codes. When the Maximum Security (MS) LockĀ® launched in 1955, it quickly became the industry standard and even now remains the dominant locking solution for narrow stile aluminum openings.