Sargent 8255 WTL Office Function Mortise Lockset — LA Keyway

The Sargent 8255 WTL is a heavy-duty commercial mortise lockset configured for the Office (or Entry) function — one of the most widely specified functions in commercial construction. Built on Sargent's proven 8200 Series mortise lock platform, the 8255 combines a robust mortise lock body with WTL lever trim and the LA keyway, making it a reliable, field-serviceable choice for offices, corridors, and institutional interiors that require controlled access from the outside while maintaining free egress from the inside.

Office Function Explained (Function 55 / ANSI F05-class)

The 8255 Office/Entry function operates as follows: the outside lever retracts the latch bolt freely when unlocked; when locked, the outside lever is held rigid and the latch can only be retracted by key from outside. The inside lever always retracts the latch bolt freely, ensuring unobstructed egress at all times. An auxiliary deadlatch is included, providing resistance against latch-bolt manipulation (credit-card attacks). Locking is controlled by a toggle mechanism on the inside — no inside cylinder required — making it straightforward for facility staff to lock and unlock without a key from the secure side.

This function is appropriate for private offices, administrative suites, clinic exam rooms, and similar applications where a single occupant or staff member controls access.

Key Benefits

• Proven 8200 Series mortise lock body — heavy-duty, field-repairable construction built for high-traffic commercial doors
• WTL lever trim — a clean, commercial-grade lever style compatible with Sargent's standard rose and escutcheon trim system
• LA keyway — a widely used Sargent proprietary keyway, compatible with Sargent master key systems and key control programs
• Auxiliary deadlatch — guards against latch manipulation for added security
• Inside lever always free — supports life-safety egress requirements on non-exit-device doors
• Toggle locking — inside occupant can lock/unlock the outside lever without a key
• Mortise construction — superior strength and durability versus cylindrical locksets on heavy commercial doors

Typical Applications

• Private offices and executive suites
• Healthcare and clinic exam rooms
• Administrative and back-of-house areas
• Educational facilities — faculty and staff offices
• Government and institutional buildings
• Any commercial opening requiring controlled outside access with free inside egress

Technical Details

Contact us to request a specification sheet, confirm finish options, or inquire about compatible cylinders, roses, and master key system integration for this lockset.

The Sargent 8255 WTL is a heavy-duty Grade 1 Mortise Lockset designed to provide versatile security and architectural elegance for professional office environments, administrative buildings, and upscale commercial facilities. As a cornerstone of the Sargent 8200 Series, it is engineered to withstand extreme physical abuse, far exceeding ANSI/BHMA A156.13 standards. The 8255 Office or Entry Function (ANSI F04) allows users to easily toggle between "free passage" and "keyed entry," making it the premier choice for suites that require restricted access during business hours and absolute security after-hours.

Versatile Office & Entry Function (ANSI F04)

The 8255 function is the industry standard for high-traffic office doors. It uses a face-mounted toggle mechanism that gives the occupant complete control over the door’s accessibility.

• Dual Operation (Toggle): The outside lever is made operative (unlocked) or rigid (locked) by the stop works toggle located on the armored front of the lock body.
  
• Keyed Access: When the exterior lever is toggled to the locked position, entry can only be gained by a physical key using the standard Sargent LA Keyway.
  
• Constant Life-Safety Egress: Regardless of the locking state, the inside lever is always free. This ensures that occupants can exit the room instantly at any time, fully complying with NFPA 101 Life Safety and ADA accessibility codes.
  
• Auxiliary Deadlatch: Includes a stainless steel deadlatch that prevents "shimming" or unauthorized manipulation of the latchbolt when the door is closed.
  

Professional WTL Escutcheon Trim

The WTL trim configuration (WT Escutcheon with L Lever) delivers a sophisticated linear architectural aesthetic backed by extreme mechanical reinforcement.

• WT Escutcheon Plate: This heavy-duty wrought metal escutcheon provides a robust mounting surface that reinforces the door face and protects the LA Keyway cylinder from tampering, physical abuse, or vandalism.
• L Lever Design: The L Lever features a modern, sleek profile that is fully ADA compliant. Its ergonomic shape allows for effortless operation with only 30° of lever rotation required to retract the latchbolt.
  
• 14 Million Cycles: Independently verified to exceed the Grade 1 standard by 14 times, the Sargent 8200 Series provides the lowest total cost of ownership by virtually eliminating the need for replacement.
  
• Anti-Sag Technology: High-carbon steel spring cartridges and cold-forged steel hubs ensure the L Lever remains perfectly horizontal, maintaining a professional look for the life of the building.
  

Key Product Features

• ANSI/BHMA Grade 1 & Security Grade 1: The highest possible rating for mechanical performance and resistance to physical attack.
  
• Office/Entry Function (F04): Toggle-controlled exterior locking for flexible facility management.
  
• Sargent LA Keyway: Ships with a standard 6-pin brass cylinder in the popular LA Keyway, compatible with existing Sargent master key systems.
  
• Fire-Rated Safety: UL/cUL Listed for use on 3-hour fire-rated doors, maintaining a safe fire barrier for corridor and office applications.
  
• Vandal-Resistant Chassis: Built on a 12-gauge heavy-duty wrought steel lock case that is zinc dichromate plated for maximum corrosion resistance.
• Universal Handing: The non-handed chassis is easily field-reversible to accommodate any door swing during installation.

Technical Specifications

Ordering & Installation Information

The Sargent 8255 WTL is designed for precision fitment in standard commercial door preparations. The through-bolted lever trim ensures the lock remains securely fastened even under heavy abuse. This hardware is fully compatible with Sargent High-Security Key Systems, including Degree®, Signature, and Keso.