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Sargent 8245 LNL Dwelling & Dormitory Entrance Function Mortise Lockset - LA Keyway
The Sargent 8245 LNL is an elite Grade 1 Mortise Lockset specifically engineered for residential-style security in high-traffic institutional settings. Combining the rugged durability of the Sargent 8200 Series with a sophisticated double-cylinder locking mechanism, this hardware is the industry standard for university dormitories, military barracks, and multi-family dwelling units. The 8245 Dwelling Entrance Function (ANSI F12) provides a high level of physical protection by integrating a heavy-duty deadbolt with keyed control from both the interior and exterior.
High-Security Dwelling & Dormitory Function (ANSI F12)
The 8245 function is designed for environments where access control and privacy must be balanced with extreme resistance to forced entry.
- Double Cylinder Deadbolt: The 1" throw hardened stainless steel deadbolt is projected and retracted by a key from either the outside or the inside.
- Automatic Exterior Locking: When the deadbolt is projected, the outside lever is automatically locked, preventing unauthorized entry even if the latch is bypassed.
- Single-Motion Egress: For critical life safety, the inside lever retracts both the latchbolt and the deadbolt simultaneously. This ensures that occupants can exit the room instantly in an emergency, regardless of whether the door is double-keyed.
- Anti-Friction Latch: The 3/4" throw latchbolt ensures quiet, smooth operation and reduces wear on the strike plate over time.
The LNL Trim: Modern Performance
The LNL design (L-Lever and LN-Rose) offers a clean, linear architectural aesthetic that is as functional as it is attractive.
- ADA & Accessibility: The L-Lever is fully ADA compliant, designed for easy operation without requiring tight grasping or twisting.
- Vandal Resistance: Built on a 12-gauge heavy-duty wrought steel lock case, this unit is UL-verified to exceed 14 million cycles—providing a service life up to 14 times longer than standard Grade 1 locks.
- Lever Sag Prevention: High-carbon steel spring cartridges ensure the levers remain perfectly horizontal, maintaining the door's professional appearance for decades.
Key Product Features
- ANSI/BHMA Grade 1 Certified: The highest rating for operational strength and security against physical attack.
- Dwelling Entrance Function (F12): Double cylinder deadbolt security with a life-safety "single-motion" exit feature.
- LA Keyway Standard: Ships with the popular Sargent LA Keyway 6-pin brass cylinders, compatible with most existing master key systems.
- Fire Rated Integrity: UL/cUL Listed for use on 3-hour fire-rated doors, essential for dormitory corridor safety.
- Field Reversible: The non-handed chassis allows for easy adjustment to any door swing during installation.
- Corrosion Protection: The lock case is treated with a zinc dichromate finish to resist environmental degradation in various climates.
Technical Specifications
| Feature | Details |
| Function | 45 Dwelling / Dormitory Entrance (ANSI F12) |
| Series | 8200 Heavy-Duty Mortise |
| Lever Style | LNL (L-Lever with LN-Rose) |
| Deadbolt | 1" Throw Hardened Stainless Steel |
| Latchbolt | 3/4" Throw Stainless Steel Anti-Friction |
| Cylinders | Double 6-Pin Brass, LA Keyway |
| Backset | 2-3/4" (Standard) |
| Warranty | 10-Year Mechanical Limited Warranty |
Ordering & Installation Information
The Sargent 8245 LNL is engineered for precision fitment. For doors thicker than 1-3/4", please specify the door thickness at the time of order to ensure correct cylinder and spindle sizing. 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 | F20 - Apartment |
| Trim Design | LNL |
| Series | Sargent - 8200 Series |
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