Sargent 8204 LSF Trim Storeroom or Closet Function Mortise Lockset

The Sargent 8204 LSF is a mortise lockset from the Sargent 8200 Series combining the 8204 Storeroom or Closet function (ANSI F07) with the LS Security Escutcheon and the F lever. Built for high-traffic institutional and commercial corridors where appearance retention and controlled access both matter, this lock admits keyholders from outside while keeping the inside lever free at all times for unrestricted egress — no credential needed to exit. The LS security escutcheon covers the lock area with a purpose-built security profile, maintaining a composed, modern face on the corridor side. Certified to ANSI/BHMA A156.13 Series 1000 Operational Grade 1 and Security Grade 1, the 8204 LSF pairs disciplined access control with the proven endurance of the 8200 Series lock body.

The catalog states the security benefit directly: Cylinder is protected by the Escutcheon, and (4) Spanner security screws are exposed on inside trim standard. That pairing is the reason to specify LS — the cylinder sits behind the escutcheon plate rather than standing proud of a rose, and the fasteners left exposed on the inside take a spanner bit rather than a common driver.

8204 Storeroom / Closet Function — ANSI F07: Controlled Entry, Free Egress

The ANSI F07 function secures a space from the outside at all times while guaranteeing free passage from the inside — the standard access model for storerooms, supply closets, server rooms and similar controlled-access areas. There is no deadbolt, no thumbturn and no occupancy indicator; the 8204 is a single-cylinder function operated by key outside only.

• Key-Only Outside Entry: The outside trim is locked at all times; only a valid key retracts the latchbolt to allow entry. Because there is no pushbutton, no thumbturn and no inside release to the outside trim, the door cannot be held unlocked from within — access discipline is maintained at the hardware level.
• Always-Free Inside Egress: The inside lever retracts the latchbolt at all times with no credential required, meeting the fundamental life-safety requirement that occupants can exit without delay. This is a non-negotiable characteristic of the ANSI F07 function and is not field-adjustable.
• Stainless Steel Auxiliary Deadlatch: The auxiliary deadlatch is stainless steel and non-handed, automatically deadlocking the latchbolt when the door closes against the strike. This prevents the latchbolt from being depressed with a thin tool when the door is shut — a practical security measure in unmonitored corridors.
• Anti-Friction Stainless Steel Latchbolt: The one-piece latchbolt is stainless steel with a 3/4" (19mm) throw and an anti-friction feature that reduces door-closing resistance. The multi-function 8200/7800 lock body that carries it embodies nine functions in a single lock case, meaning the same proven chassis underpins the entire 8200 range.

LS Security Escutcheon with F Lever: A Purposeful Presence in the Corridor

The LSF trim pairs the LS Security Escutcheon — a security escutcheon that covers the lock area — with the straight, contemporary F lever. Together they present an intentionally professional face suited to modern institutional interiors, from healthcare corridors to corporate back-of-house areas, while keeping the hardware footprint clean and consistent across a specification.

• LS Security Escutcheon: The LS is a security escutcheon that covers the lock area on the outside of the door. Note that the LS escutcheon trim is handed — specify LH, RH, LHR or RHR when ordering, as it cannot be reversed in the field the way the lock body can.
• Low-Effort Operation: Only 30 degrees of lever rotation is required to retract the latchbolt. In high-traffic corridors this reduces fatigue and improves throughput, and it supports the requirement to comply with the Americans with Disabilities Act — consult local authorities for jurisdiction-specific confirmation.
• Through-Bolted Lever Assembly: Trim, levers and escutcheons are through-bolted and fully interchangeable between rose and escutcheon configurations, ensuring proper alignment. Lever return springs are contained inside the lock case rather than in the trim, which simplifies field installation and reduces the chance of spring loss or misassembly.
• Six Architectural Finishes: The 8204 LSF is offered in 626 Satin Chrome (US26D), 630 Satin Stainless (US32D), 613E Oil Rubbed Bronze Equal (US10BE), 605 Polished Brass (US3), 612 Satin Bronze (US10) and 625 Polished Chrome (US26) — a range that spans warm traditional palettes and cooler contemporary finishes to suit a wide variety of interior specifications.

Function (Sargent Catalog)

• Key outside retracts latchbolt
• Trim outside locked at all times
• Trim inside always retracts latchbolt
• Auxiliary deadlatch
• A Multi-Function 8200/7800 Lockbody

Key Product Features

• 16 Million Cycle Endurance: The 8200 Series lock body completed UL cycle testing at 16 million cycles (Verification ID: V584148), exceeding the ANSI/BHMA A156.13 Grade 1 cycle requirement by 16 times — a meaningful performance margin for locks in continuous daily service.
• ANSI/BHMA A156.13 Series 1000 — Operational Grade 1 and Security Grade 1: Certified with standard trims to the highest combined operational and security grade in the A156.13 standard, confirming independent verification of both durability and resistance to unauthorized entry.
• 12-Gauge Zinc-Dichromate Steel Case: The lock case is 12-gauge heavy-duty wrought steel, zinc dichromate plated, with a wall thickness of 7/64" (3mm) — a robust enclosure for the lock mechanism in demanding institutional environments.
• Cold Forged Steel Hubs: The 8200 Series uses cold forged steel hubs and a high-carbon steel spring cartridge. Sargent's own catalog credits this combination with superior strength and cycle life.
• UL/cUL 3-Hour Fire Rating and Positive Pressure Compliance: Listed to US and Canadian safety standards for A-label 3-hour fire doors (4×10 single and 8×10 double), and meets ANSI/UL 10C Positive Pressure requirements — confirmed by the stamped letter F and UL symbol on the armored front.
• 10-Year Limited Mechanical Warranty: Sargent backs the lock body with a 10-year limited mechanical warranty. Two nickel-silver keys are included standard; the LA keyway is the standard option, and the LC less-cylinder option is also available on this listing for owners supplying their own cylinders.

Technical Specifications

Ordering & Installation Information

The 8204 LSF requires door prep to ANSI/SDI A250.14 modified per template 7057 and is standard for 1-3/4" (44mm) doors with a fixed 2-3/4" (70mm) backset — no alternative backset is offered, so confirm rough-in dimensions before specifying. A minimum 4-1/2" (114mm) stile is required; narrower stiles cannot accommodate this lock body. The lock body is field-reversible without removing parts or opening the case, but this trim is handed — order must include the correct hand: LH, RH, LHR or RHR. The 8204 LSF is a conventional cylinder lock; cylinder options on this listing are LA keyway or LC less-cylinder. Interchangeable-core formats (LFIC and SFIC) are not available on this trim — specifiers standardising on an IC platform should select a compatible trim code instead. Six finishes are available: 626, 630, 613E, 605, 612 and 625. Lead time is 3–4 weeks as a factory order. The broader Sargent 8200 Series also offers optional MicroShield antimicrobial coating, ElectroLynx electro-mechanical configurations, status indicators and push/pull ALP trim — consult DoorwaysPlus for separately specified configurations.