For over 100 years, Adams Rite has been the Aluminum Hardware Authority, known for their innovative designs and high quality products. When the Maximum Security (MS) Lock launched in 1955, it quickly became the industry standard and even now remains the dominant locking solution for narrow stile aluminum openings. Today Adams Rite designs, manufactures and markets door and door hardware products to the commercial, industrial and institutional building construction industry and is recognized as one of the leading suppliers in its area of specialization. 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.

• Designed for greater key control, the 1877 Cylinder-Operated Flushbolt prevents accidental locking of the inactive leaf of paired wood doors
• May be installed to lock at threshold or at header
• Designed for use instead of conventional flip-lever operated flushbolts, 1877 Cylinder-Operated Flushbolts give building management key control of the inactive leaf of paired wood doors
• Prevents casual locking of the inactive leaf by unauthorized persons
• Uses same basic over-center action mechanism as MS pivoted bolt deadlocks