Sargent 8204 LB Trim Storeroom or Closet Function Mortise Lockset

The Sargent 8200 Series 8204 LB is a commercial-grade mortise lockset built for storeroom and closet doors where controlled, key-only entry is the requirement. Conforming to ANSI F07 Storeroom or Closet function, the 8204 keeps the outside trim locked at all times — entry is by key only — while the inside trim always retracts the latchbolt freely, ensuring unrestricted egress. Trim code LB pairs the L Rose (3-1/2" dia) with the B lever, a combination that reads cleanly in a hardware schedule and scales across a broad range of institutional and commercial interiors. Backed by Sargent's century-long mortise lock heritage, the 8200 Series lockbody is rated ANSI/BHMA A156.13 Series 1000 Operational Grade 1 and Security Grade 1, making this a specification-ready solution for architects and facility managers demanding long-term serviceability.

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

The 8204 delivers a straightforward, secure access hierarchy: the outside trim is locked at all times and yields only to a key, while the inside lever retracts the latchbolt on demand with no credential required. A stainless steel auxiliary deadlatch and an anti-friction latch work together to keep the door positively latched between entries — a critical detail in high-traffic storage and closet applications.

• Key-Only Outside Entry: The outside trim is locked at all times; only a key retracts the latchbolt. There is no thumbturn, no push-button, and no deadbolt — the 8204 is a single-cylinder storeroom function, so the security of the space depends entirely on key control.
• Always-Free Inside Egress: The inside lever always retracts the latchbolt without a key or any unlocking step. Because egress is never impeded by lock state, the function is appropriate for occupied storerooms where staff must exit quickly without credential.
• Stainless Steel Auxiliary Deadlatch: The auxiliary deadlatch is stainless steel and non-handed. When the door closes, the deadlatch guards against latchbolt manipulation — preventing the latchbolt from being pushed back without a key — which is why the catalog specifies it as a distinct security element alongside the primary latch.
• Anti-Friction Latchbolt and Multi-Function Lockbody: The one-piece, stainless steel latchbolt with 3/4" (19mm) throw incorporates an anti-friction feature that reduces door-closing force and wear over time. The lockbody itself is Sargent's multi-function 8200/7800 design — the same case supports nine ANSI functions, which means replacement bodies and parts remain readily available across the full product family.

LB Trim: L Rose (3-1/2" dia) with B Lever

Trim code LB combines the L Rose at 3-1/2" diameter with the B lever. The round rose keeps the hardware footprint tidy at the door face, and because the B lever is non-handed, no handing designation is required when writing the hardware schedule — the same trim ships and installs on any door swing without reordering.

• Non-Handed Trim — No Handing Selection Required: The B lever is non-handed, so a single line item covers left-hand and right-hand doors alike. This simplifies procurement for projects with mixed door swings and eliminates a common source of field substitution delays.
• 30-Degree Lever Rotation: Only 30 degrees of lever rotation is required to fully retract the latchbolt. That shallow arc reduces the effort needed on each operation — a practical benefit over the life of a high-cycle storeroom door — and is the basis for the lock's compliance with the Americans with Disabilities Act; consult local authorities to confirm applicability on your project.
• Lever Springs Inside the Case: The lever return springs are contained inside the lock case rather than in the trim. This means the rose and lever can be removed, replaced, or swapped to a different finish without disturbing the spring mechanism, which directly supports long-term serviceability at the trim level.
• Through-Bolted, Interchangeable Trim: Trim, including both rose and lever, is through-bolted and fully interchangeable between rose and escutcheon configurations. Available finishes for this listing include 626 Satin Chrome, 630 Satin Stainless, 613E Oil Rubbed Bronze Equal, 605 Polished Brass, 612 Satin Bronze, and 625 Polished Chrome.

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

• ANSI/BHMA A156.13 Series 1000 — Operational Grade 1 and Security Grade 1: The 8204 LB meets the highest ANSI/BHMA grade in both operational performance and security with standard trims. Note that selecting the LFIC (option 60) or SFIC (option 70) cylinder configuration does not meet Security Grade 1 requirements per the catalog.
• 16 Million Cycle Verified Durability: The 8200 Series lockbody completed a UL "above and beyond" cycle test at 16 million cycles — sixteen times the ANSI/BHMA A156.13 Grade 1 requirement. For a storeroom door that may see dozens of operations daily, this margin translates directly into reduced maintenance and replacement costs over the life of the building.
• 12-Gauge Zinc-Dichromate Plated Steel Case: The lock case is 12-gauge heavy-duty wrought steel, zinc-dichromate plated, at 7/64" (3mm) thickness. The zinc-dichromate plating provides corrosion resistance within the door pocket where the case is not accessible for routine inspection.
• Cold Forged Steel Hubs: The 8200 Series uses cold forged steel hubs — not the sintered iron used in the 7800 line — paired with a high-carbon steel spring cartridge. Together these components are engineered to sustain the cycle life the 8200 Series is rated for.
• UL/cUL 3-Hour Fire Rating and UL 10C Positive Pressure: The lockbody is UL and cUL Listed for A-label single (4×10) and double (8×10) three-hour fire doors and lesser classifications, and meets ANSI/UL 10C Positive Pressure fire testing. The armored front is stamped with the letter F and the UL symbol to confirm the listing in the field.
• Cylinder and Keyway Options: This listing is offered in four configurations: LC (Less Cylinder) for owner-supplied cylinders; LA Keyway with a standard 6-pin brass cylinder (size #41, 1-1/8") keyed to Sargent's LA keyway; 60 (LFIC Less Core) for large-format interchangeable core systems; and 70 (SFIC Less Core) for small-format interchangeable core systems. The 10-year limited mechanical warranty covers the lockbody. LFIC and SFIC core options do not meet ANSI/BHMA A156.13 Security Grade 1 requirements.

Technical Specifications

Ordering & Installation Information

The 8204 LB is a factory order item with a lead time of 3–4 weeks. Door preparation follows ANSI/SDI A250.14 modified per template 7057; confirm the door prep with your door manufacturer before ordering. The lock requires a 2-3/4" (70mm) backset — no other backset is available — and a minimum 4-1/2" (114mm) stile width; doors narrower than that stile cannot accept this lockset. Standard door thickness is 1-3/4" (44mm), though the 8200 Series is offered for door thicknesses from 1-3/8" to 6" — consult the factory for non-standard thickness applications. The lock body is field reversible and can be re-handed without opening the lock case; the B lever trim is non-handed and requires no handing selection at order. Six finishes are available: 626 Satin Chrome, 630 Satin Stainless, 613E Oil Rubbed Bronze Equal, 605 Polished Brass, 612 Satin Bronze, and 625 Polished Chrome. For specialized project requirements, the broader 8200 Series offers optional configurations including electro-mechanical functions with ElectroLynx® quick connectors, MicroShield® antimicrobial finish coating, status indicators, and push/pull ALP trim — all separately specified.