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Sargent 8225 LNL Dormitory Function Mortise Lockset - LA Keyway
The Sargent 8225 LNL is a high-security Grade 1 Mortise Lockset designed for demanding residential and institutional environments, including university dormitories, military barracks, and multi-family housing. As a primary model in the Sargent 8200 Series, this lockset is the industry benchmark for durability and strength, featuring a integrated deadbolt for enhanced privacy and forced-entry resistance. The 8225 Dormitory or Exit Function (ANSI F13) provides a sophisticated balance between individual security and life-safety compliance, ensuring occupants feel secure while maintaining immediate emergency egress.
Sophisticated Dormitory & Exit Function (ANSI F13)
The 8225 function is engineered to provide superior privacy control with a single cylinder and interior thumbturn operation.
- Deadbolt Security: The 1" throw stainless steel deadbolt is projected and retracted by the key from the outside or the thumbturn from the inside.
- Automatic Unlocking: When the deadbolt is projected, the exterior lever is automatically locked. However, operating the interior lever retracts both the latchbolt and the deadbolt simultaneously, immediately unlocking the outside trim for convenience and safety.
- Independent Latching: When the deadbolt is retracted, the latchbolt is operated by the lever from either side, functioning as a standard passage door.
Architectural LNL Trim Design
The LNL trim combines the modern, linear L-Lever with the traditional LN-Rose, offering a clean aesthetic that stands up to the rigors of heavy-duty institutional use.
- ADA Compliance: The L-Lever is fully accessible and meets all ADA requirements, ensuring ease of use for all residents.
- Industrial Strength: The Sargent 8200 Series is independently verified to exceed 14 million cycles—14 times the requirement for Grade 1 certification—offering an unmatched total cost of ownership.
- Lever Sag Prevention: High-carbon steel spring cartridges and heavy-duty wrought steel hubs ensure the levers remain perfectly horizontal, even in high-frequency "student-proof" environments.
Key Product Features
- ANSI/BHMA Grade 1 Certified: The highest industry rating for mechanical strength and security.
- Dormitory/Exit Function (F13): Combined latch and deadbolt security with single-motion egress.
- LA Keyway Integration: Ships with a standard Sargent LA Keyway 6-pin brass cylinder, making it compatible with most existing Sargent master key systems.
- Fire Rated: UL/cUL Listed for use on 3-hour fire-rated doors, essential for corridor and dormitory safety.
- Vandal Resistant: Through-bolted lever trim and a 12-gauge heavy-duty wrought steel lock case provide maximum protection against tampering.
- Smooth Operation: Only 30° of lever rotation is required to retract the latchbolt, reducing physical strain on the mechanism.
Technical Specifications
| Feature | Details |
| Function | 25 Dormitory / Exit (ANSI F13) |
| Series | 8200 Heavy-Duty Mortise |
| Lever Style | LNL (L-Lever with LN-Rose) - ADA Compliant |
| Deadbolt | 1" Throw Hardened Stainless Steel |
| Latchbolt | 3/4" Throw Stainless Steel Anti-Friction |
| Backset | 2-3/4" (Standard for Mortise Locks) |
| Cylinder | 6-Pin Brass, LA Keyway |
| Warranty | 10-Year Mechanical Limited Warranty |
Ordering & Installation Information
The Sargent 8225 LNL is designed for "fool-proof" installation with pre-assembled components that can reduce installation time by up to 40%. The non-handed chassis is easily field-reversible to accommodate any door swing.
| 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 | F12 - Dormitory |
| Trim Design | LNL |
| Series | Sargent - 8200 Series |
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