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Sargent 8237 LNL Classroom Function Mortise Lockset - LA Keyway
The Sargent 8237 LNL is a top-tier Grade 1 Heavy-Duty Mortise Lockset specifically engineered for the rigorous demands of educational institutions, commercial offices, and high-traffic public buildings. As part of the world-class Sargent 8200 Series, this lockset is recognized as the industry benchmark for strength and durability, far exceeding ANSI/BHMA A156.13 standards for physical security. The 8237 Classroom Function (ANSI F05) provides essential security by allowing the exterior lever to be locked or unlocked only via a key, ensuring that faculty and staff maintain total control over room access.
Critical Classroom Function (ANSI F05) Security
The 8237 function is a vital component of facility security and lockdown preparedness. It is designed to provide robust perimeter control while never compromising life safety.
- Key-Controlled Access: The outside lever is locked or unlocked strictly by the exterior key. When locked, the lever remains rigid, preventing unauthorized entry.
- Instant Life Safety Egress: Regardless of the locking status of the exterior, the inside lever always allows for constant free egress, ensuring occupants can exit the room immediately in an emergency.
- Auxiliary Deadlatch: Includes a specialized deadlocking latch that prevents "shimming" or forced entry attempts when the door is closed.
Architectural LNL Trim Design
The LNL trim represents a perfect marriage of modern linear aesthetics and high-performance engineering.
- ADA Compliance: The L-Lever is ergonomically designed for ease of use, meeting all ADA accessibility codes and national safety requirements.
- Extreme Mechanical Life: Verified for over 14 million cycles—14 times the requirement for Grade 1 certification—ensuring the lowest total cost of ownership over decades of use.
- Lever Sag Prevention: Heavy-duty wrought steel hubs and high-carbon steel spring cartridges ensure the levers remain perfectly horizontal, maintaining a professional look even under heavy use.
- LA Keyway Standard: Ships with the standard Sargent LA Keyway 6-pin brass cylinder, allowing for seamless integration into most existing master key systems.
Key Product Features
- ANSI/BHMA Grade 1: Certified to the highest industry standards for operational grade and physical security.
- Classroom Function (F05): Exterior key locks/unlocks the handle; interior is always free for exit.
- Fire Rated Integrity: UL/cUL Listed for use on 3-hour fire-rated doors, maintaining the fire barrier in critical hallways.
- Vandal Resistant Engineering: Features a 12-gauge heavy-duty wrought steel lock case that is zinc dichromate plated for maximum corrosion resistance.
- Efficient Installation: Redesigned internal components reduce installation time by up to 40% compared to traditional mortise locks.
- Stainless Steel Latchbolt: 3/4" throw one-piece anti-friction latchbolt provides smooth operation and increased security.
Technical Specifications
| Feature | Details |
| Function | 37 Classroom (ANSI F05) |
| Series | 8200 Heavy-Duty Mortise |
| Lever Style | LNL (Linear Lever with LN Rose) |
| Cylinder | 6-Pin Brass, LA Keyway |
| Backset | 2-3/4" (Standard for Mortise Locks) |
| Stile Width | 4-1/2" Minimum |
| Latchbolt | 3/4" Throw Stainless Steel Anti-Friction |
| Warranty | 10-Year Mechanical Limited Warranty |
Ordering & Installation Information
The Sargent 8237 LNL is designed for versatility. The lock body is easily field-reversible, allowing it to accommodate any door swing without the need for specialized tools. This model is fully compatible with Sargent High-Security Key Systems, including Degree®, Signature, and Keso.
| Finish with BHMA code | 626 - US26D Satin Chrome or 630 - US32D Satin Stainless or 613E - US10BE Oil Rubbed Bronze Equal or 605 - US3 Polish Brass or 612 - US10 Satin Bronze or 625 - US26 Polish Chrome |
| Sargent Keyways | LC - Less Cylinder or LA Keyway or 60 - LFIC less Core or 70 - SFIC less Core |
| Brand | Sargent |
| ANSI Mortise Lock Function | F05 - Classroom |
| Trim Design | LNL |
| Series | Sargent - 8200 Series |
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