Sargent 8204 OB Trim Storeroom or Closet Function Mortise Lockset

The Sargent 8204 OB brings together the Sargent 8200 Series mortise platform and the 8204 Storeroom / Closet function (ANSI F07) in a clean, serviceable rose-and-lever trim that reads clearly on any hardware schedule. The O Rose (2-3/4" dia) paired with the B lever delivers a compact, recognizable footprint — architects and specifiers can identify the trim code at a glance, and facilities teams can source replacement parts without ambiguity years after original installation. On the access side, entry requires a key; inside egress is always free. There is no deadbolt, no thumbturn, and no occupancy indicator — the 8204 is a focused, single-cylinder storeroom or closet function, nothing more and nothing less. Backed by a 10-year limited mechanical warranty and built on a lock body independently cycle-tested to 16 million cycles, this is commercial hardware specified for the long term.

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

ANSI F07 defines a precise access hierarchy: the outside trim is locked at all times and yields only to a key, while the inside lever retracts the latchbolt freely on demand — no credential, no delay. That combination makes the 8204 the standard specification for storerooms, closets, and secured utility spaces where controlled entry and unconditional egress must coexist.

• Key-Only Outside Entry: The outside trim is locked at all times; only a key retracts the latchbolt from the exterior. Because there is no thumbturn and no inside release that affects the outside trim, the locked state resists defeat from the corridor side by reaching under a door or through a gap.
• Always-Free Inside Egress: The inside lever always retracts the latchbolt, regardless of the locked state on the outside. Occupants are never trapped — a critical baseline for life-safety compliance in any occupied space, however briefly.
• Stainless Steel Auxiliary Deadlatch: The auxiliary deadlatch is stainless steel and non-handed. It guards against latchbolt shimming by deadlocking automatically when the door closes against the strike — a passive, always-active layer of protection that requires no user action.
• Anti-Friction Stainless Steel Latch: The one-piece latchbolt is stainless steel with a 3/4" (19mm) throw and an anti-friction feature. The anti-friction design reduces the operating force needed to compress the latch against the strike during closing, which matters in high-traffic service corridors where door closers are set firm and latching reliability must be consistent across thousands of cycles.

OB Trim — O Rose (2-3/4" dia) with B Lever

The OB trim code defines exactly what appears on both sides of the door: a 2-3/4" diameter O Rose as the carrier and a B lever as the operating handle. The rose diameter and lever profile together determine how the hardware reads in an elevation drawing and on a hardware schedule — specifying the trim code locks in that visual language across an entire project.

• 30-Degree Lever Rotation: Only 30 degrees of lever rotation is required to fully retract the latchbolt. That reduced arc shortens the operating stroke for users and contributes to lever handle compliance with accessibility requirements — the 8200 Series complies with the American Disabilities Act; consult local authorities to confirm applicability to your jurisdiction.
• Non-Handed Trim: The B lever trim is non-handed, so no handing selection is required at the time of order. Combined with the field-reversible lock body, the OB trim simplifies procurement and reduces the risk of a handing error appearing in the field — though the lock body and trim follow separate rules and must each be considered on their own terms.
• Through-Bolted, Interchangeable Trim: Trim, including rose and lever, is through-bolted and fully interchangeable between rose and escutcheon configurations. That design means a facility manager can swap trim styles at a future renovation without replacing the lock body — the investment in the mortise case carries forward.
• Lever Springs Inside the Case: The lever return springs are contained inside the lock case rather than in the trim assembly. This simplifies trim removal and re-installation during routine service — technicians working at the rose do not need to manage loose spring components, which reduces both installation time and the chance of a spring being lost or misassembled.

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 Durability: The 8200 Series lock body completed a UL cycle test at 16 million cycles — exceeding the ANSI/BHMA A156.13 Grade 1 cycle requirement by 16 times (Verification ID: V584148). For a storeroom lock on a busy service corridor, that margin translates directly into reduced maintenance intervals.
• ANSI/BHMA A156.13 Series 1000 — Operational and Security Grade 1: Certified to and exceeding both Operational Grade 1 and Security Grade 1 with standard trims. Note that the LFIC (60) and SFIC (70) cylinder options offered on this listing do not meet Security Grade 1 requirements — specifiers requiring Security Grade 1 throughout should select the LC or LA keyway options.
• 12-Gauge Zinc-Dichromate Steel Case with Cold Forged Steel Hubs: The lock body case is 12-gauge heavy-duty wrought steel, zinc dichromate plated, at 7/64" (3mm) thickness. The 8200 Series hubs are cold forged steel — not the sintered iron used in the 7800 line — paired with a high-carbon steel spring cartridge for sustained cycle life.
• UL / cUL 3-Hour Fire Rating and Positive Pressure Compliance: Listed to US and Canadian safety standards for A-label single (4×10) and double (8×10) 3-hour fire doors and lesser-rated assemblies. Also meets ANSI/UL 10C Positive Pressure Fire Test of Door Assemblies. The armored front is stamped with the letter F and UL symbol to confirm listing at the door.
• Cylinder and Keyway Options: Four options are available on this listing: LC (Less Cylinder), LA Keyway (standard Sargent keyway, masterkey- and grand-masterkey-capable, construction keying available), 60 (LFIC Less Core), and 70 (SFIC Less Core). LFIC and SFIC cores do not meet ANSI/BHMA A156.13 Security Grade 1. The standard cylinder for this trim is brass, size #41 (1-1/8"). Two nickel silver keys are included; control or emergency keys must be ordered separately when required.
• 10-Year Limited Mechanical Warranty: Sargent backs the 8200 Series lock body with a 10-year limited mechanical warranty (warranty limited to replacement of the lock body). That coverage horizon aligns with typical commercial facility maintenance cycles and supports long-term total-cost-of-ownership calculations.

Technical Specifications

Ordering & Installation Information

The 8204 OB installs on doors prepped to ANSI/SDI A250.14 modified per template 7057, at a 2-3/4" (70mm) backset only — no alternate backset is available, so verify rough prep dimensions before specifying. A 4-1/2" (114mm) minimum stile is required; narrower stiles cannot accommodate the mortise case. The lock body is designed for 1-3/4" (44mm) thick doors as standard. The lock body is field-reversible without opening the case — re-handing at installation or renovation requires no disassembly. The OB trim (B lever) is non-handed, so no separate handing call-out is needed on the hardware schedule. Six finishes are offered: 626 (US26D Satin Chrome), 630 (US32D Satin Stainless), 613E (US10BE Oil Rubbed Bronze Equal), 605 (US3 Polished Brass), 612 (US10 Satin Bronze), and 625 (US26 Polished Chrome). Cylinder options are LC, LA, 60 (LFIC Less Core), and 70 (SFIC Less Core). The broader Sargent 8200 Series also offers MicroShield antimicrobial coating, electro-mechanical configurations with ElectroLynx connectors, status indicators, and security trim options — consult DoorwaysPlus for series-level configurations. Lead time: factory order, 3–4 weeks.