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Sargent 8243 LNL Apartment/Corridor Lockset - LA Keyway
The Sargent 8243 LNL is a high-security Grade 1 Mortise Lockset designed for the specialized needs of multi-family housing, upscale apartments, and executive office corridors. As part of the prestigious Sargent 8200 Series, this lockset represents the pinnacle of physical security and mechanical endurance. The 8243 Entrance or Apartment Corridor Function (ANSI F20) combines the convenience of an interior thumbturn with the high-strength protection of an integrated deadbolt, ensuring residents feel secure while maintaining a sophisticated architectural profile.
Comprehensive Apartment Corridor Security (ANSI F20)
The 8243 function is engineered to provide multi-layered security for private living and working spaces. It allows for a standard latching operation during the day and high-security deadlocking at night.
- Integrated Deadbolt Protection: Features a 1" throw hardened stainless steel deadbolt. The deadbolt is projected or retracted by the interior thumbturn or the exterior key.
- Smart Locking Logic: When the deadbolt is projected, the exterior lever is automatically locked. Retracting the deadbolt via the thumbturn or key unlocks the outside lever.
- Safety & Convenience: A key from the outside retracts both the deadbolt and the latchbolt simultaneously.
- Life Safety Egress: For immediate exit during an emergency, the inside lever retracts both the latchbolt and the deadbolt with a single motion, ensuring compliance with all fire and safety codes.
Architectural Excellence: The LNL Trim Design
The LNL trim (L-Lever with LN-Rose) is a modern, linear handle set that offers a sleek aesthetic without compromising the heavy-duty performance required for institutional use.
- ADA Compliance: The linear L-Lever is ergonomically designed for ease of use, meeting all ADA accessibility requirements.
- Unrivaled Mechanical Life: Independently verified to exceed 14 million cycles—14 times the requirement for Grade 1 certification—this lockset is built to outlast the building's lifecycle.
- Anti-Sag Engineering: High-carbon steel spring cartridges and heavy-duty wrought steel hubs prevent lever sag, keeping the hardware perfectly horizontal and professional-looking.
Key Product Features
- ANSI/BHMA Grade 1 Certified: The highest industry rating for security, physical strength, and operational longevity.
- Apartment/Corridor Function (F20): Combined latch and deadbolt security with an interior thumbturn.
- LA Keyway Integration: Ships with a standard Sargent LA Keyway 6-pin brass cylinder, allowing for seamless integration into existing master key systems.
- Fire Rated Integrity: UL/cUL Listed for use on 3-hour fire-rated doors, essential for corridor and residential safety.
- Vandal Resistant: Features a 12-gauge heavy-duty wrought steel lock case and through-bolted lever trim for maximum protection.
- Smooth Operation: Only 30° of lever rotation is required to retract the latchbolt, providing a high-end feel and reduced wear.
Technical Specifications
| Feature | Details |
| Function | 43 Entrance / Apartment / Corridor (ANSI F20) |
| 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 |
| 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 8243 LNL is designed for high-performance facility integration. The lock body is easily field-reversible to accommodate any door swing. For doors thicker than 1-3/4", please specify the door thickness at the time of order to ensure the correct cylinder and spindle lengths are provided.
| 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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