Sargent 28-11G05 LL Heavy Duty Office Lever Lockset, Extra Heavy Duty

Function Information:

The Sargent 28-11G05 LL represents the pinnacle of cylindrical lever lock engineering. Part of the legendary Sargent 11-Line Series, this lockset is purposefully built for "mission-critical" openings that face relentless daily use and physical abuse. While standard commercial locks struggle to meet baseline certifications, the 11G05 is in a class of its own, designed to outlast the building it is installed in. The 28-prefix ensures this unit comes equipped with a Sargent 6-pin LA Keyway cylinder, providing professional-grade security and easy integration into existing master key systems.

Unrivaled Mechanical Endurance

The Sargent 11-Line doesn't just meet ANSI/BHMA A156.2 Grade 1 standards—it obliterates them through superior American engineering and high-carbon steel components.

• 10 Million Cycle Performance: Independent testing proves this lock exceeds the Grade 1 cycle requirement by 12 TIMES, enduring over 10,000,000 cycles without failure.
• Extreme Torque Resistance: Locked levers are often the target of vandalism. The 11G05 withstands over 3,000 in/lbs of torque—3 times the Grade 1 requirement—protecting the internal chassis from "broomstick" or pipe-wrench attacks.
  
• Anti-Sag Technology: Unlike inferior locks that develop "lever droop" over time, the LL lever design features heavy-duty return springs to ensure the lever remains perfectly horizontal for decades.
• 10-Year Limited Warranty: Sargent offers a decade of protection with no service required to maintain the warranty, offering the lowest total cost of ownership in the industry.

Professional Office & Entry Function (ANSI F82)

The 05 Office Function provides the perfect balance of convenience and security for professional environments, allowing users to control access with a simple turn-button.

• Push-Button Locking: Pressing the button on the interior lever locks the exterior lever. A physical key in the LA Keyway is then required for entry.
  
• Turn-Button Versatility: Turning the interior button keeps the exterior lever locked until it is manually turned back to the unlocked position, allowing for "passage" or "restricted" modes.
• Automatic Unlocking: Rotating the interior lever or closing the door automatically releases the push-button (but not the turn-button), preventing accidental lockouts.
• Fail-Safe Egress: The inside lever is always free for immediate exit, ensuring 100% compliance with NFPA 101 Life Safety and ADA accessibility codes.
• Deadlocking Latchbolt: Includes a 1/2" throw stainless steel latch and an auxiliary deadlatch to prevent "shimming" or credit card manipulation.

Technical Specifications & Compatibility

Why Choose the Sargent 28-11G05 LL?

For facility managers at universities, hospitals, and government complexes, hardware failure is a liability. The Sargent 11-Line eliminates the need for frequent replacements and emergency repairs. By choosing the 11G05, you are investing in a lockset that defines "Extra Heavy Duty."

Ideal Applications:

• Corporate Executive Offices: Combining professional aesthetics with Grade 1 security.
• Hospital Administrative Suites: Durable enough for 24/7 high-traffic environments.
• University Faculty Rooms: Allowing teachers to easily secure their space with a turn-button.
• Public Government Buildings: Providing fire-rated, vandal-resistant entry points.