Sargent 28-11G16 LL Classroom Security Public Entry Lever Lockset - Extra Heavy Duty

Function Information:

The Sargent 28-11G16 LL is an elite-tier Grade 1 Extra Heavy Duty Cylindrical Lockset specifically engineered for high-risk environments such as K-12 schools, university lecture halls, and government facilities. As a flagship model in the Sargent 11-Line Series, it is designed to withstand extreme physical abuse while providing critical life-safety functionality. The 28-prefix ensures this lock is supplied with a Sargent 6-pin LA Keyway cylinder, offering professional-grade security and seamless integration into existing master key systems.

Industry-Leading Durability: The 10-Million Cycle Benchmark

While standard Grade 1 locks are tested to 800,000 cycles, the Sargent 11-Line is in a category of its own. Independent laboratory testing has proven that this hardware set a new industry benchmark:

• 12 Times the Grade 1 Standard: Exceeds ANSI/BHMA A156.2 requirements by lasting over 10,000,000 (Ten Million) cycles. This unparalleled longevity ensures the lowest total cost of ownership by virtually eliminating the need for replacements.
• Extreme Torque Resistance: Built to withstand over 3,000 in/lbs of torque on a locked lever—3 times the force required for Grade 1 certification. This provides a massive defense against "broomstick" or pipe-wrench vandalism.
  
• Advanced Anti-Sag Engineering: High-carbon steel spring cartridges ensure there is virtually no lever sag, maintaining a perfectly horizontal LL lever profile for the life of the building.
  
• 10-Year Limited Warranty: Sargent stands behind this "Extra Heavy Duty" claim with a decade of coverage that requires no maintenance service to remain valid.
  

Critical Classroom Security & Public Entry (ANSI F110)

The 16 Classroom Security Function is a vital component of modern lockdown protocols, allowing staff to secure a room instantly without stepping into a dangerous corridor.

• Double Cylinder Control: A physical key in either the interior or exterior LA Keyway cylinder locks or unlocks the outside lever.
• Interior Lockdown Capability: During an emergency, a teacher can use their key from the inside of the room to lock the exterior lever, ensuring the room is secure without exposing themselves to threats in the hallway.
• Fail-Safe Interior Egress: For absolute life safety, the inside lever is always free. Regardless of the locking status, occupants can exit the room instantly at any time, ensuring 100% compliance with NFPA 101 and ADA accessibility codes.
• Deadlocking Latchbolt: Features a 1/2" throw stainless steel latch with an auxiliary deadlatch to prevent "shimming" or unauthorized manipulation when the door is closed.

Technical Specifications & Compatibility

Why Choose the Sargent 28-11G16 LL?

For facility managers at schools and hospitals, hardware failure is more than an inconvenience—it’s a security risk. The Sargent 11G16 is designed to be the final solution for high-traffic, high-abuse openings. By investing in a lock that lasts 10 million cycles, you secure the safety of your occupants while protecting your maintenance budget for years to come.

Ideal Applications:

• K-12 Classrooms: Providing teachers with rapid lockdown control.
• University Lecture Halls: Durable enough for constant, high-frequency student traffic.
• Government Administrative Offices: Securing professional spaces with a vandal-resistant barrier.
• Public Entry Points: Heavy-duty performance for primary facility entrances.