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Sargent 28-7U15 LB Passage Function Cylindrical Latchset
Function Information:
The Sargent 28-7U15 LB is a professional-grade Grade 2 Cylindrical Passage Latchset engineered for high-traffic interior and exterior doors where locking is not required. As a standout in the Sargent 7-Line Series, this latchset provides an exceptional balance of mechanical reliability, modern architectural styling, and rapid installation. The 28-prefix ensures this unit is supplied with the industry-standard 808 Curved Lip ANSI Strike, specifically designed for commercial hollow metal frames. Featuring the LB design—the straight B-lever paired with the contemporary L-rosette—this latchset is built to surpass ANSI/BHMA A156.2 standards for both performance and longevity.
Engineered for Institutional Durability
The Sargent 7-Line is designed to outperform the baseline requirements for Grade 2 hardware, offering facility managers a heavy-duty feel in a versatile, standard-duty footprint.
- Exceeds Industry Standards: This latchset significantly exceeds ANSI/BHMA A156.2 Grade 2 cycle requirements, ensuring years of maintenance-free service in busy commercial corridors and public spaces.
- One-Minute Installation: Specifically engineered for maximum efficiency, the 7U15 installs in one minute or less, drastically reducing labor costs for large-scale facility retrofits.
- Structural Stability: Internal thru bolts supply unmatched strength and stability without requiring additional door preparation, fitting standard modified 161 door preps.
- Solid Cast Construction: The levers are solid, one-piece castings, providing a substantial feel and superior resistance to wear and abuse compared to stamped or hollow alternatives.
Versatile Passage Function (ANSI F75)
The 15 Passage Function is the premier choice for openings that require a secure latching mechanism without a locking feature, ensuring constant access and life-safety compliance.
- Always Active Access: Both the interior and exterior levers are always unlocked and always retract the latchbolt, providing unrestricted movement between high-traffic spaces.
- ADA Compliant B-Lever: The straight B-lever is ergonomically shaped for ease of use, meeting all Americans with Disabilities Act standards for operation without tight grasping or twisting.
- Non-Handed Design: The universal design allows for easy field installation on both left-hand and right-hand swinging doors, simplifying inventory management and installation workflows.
- Fire-Rated Safety: UL/cUL Listed for use on 3-hour fire doors, maintaining the integrity of fire barriers in commercial hallways and stairwells.
Technical Specifications
| Feature | Details |
| Series | Sargent 7-Line (Cylindrical) |
| Function | 15 Passage / Closet (ANSI F75) |
| Certification | Exceeds ANSI/BHMA A156.2 Grade 2 |
| Lever / Rosette Style | LB Design (B-Lever / L-Rosette) |
| Strike Plate | 808 Curved Lip ANSI Strike (4-7/8" x 1-1/4") |
| Backset | 2-3/4" (Standard Commercial) |
| Latchbolt | Brass, 1/2" Throw |
| Handing | Non-Handed (Universal Field Reversible) |
| Door Thickness | 1-3/4" Standard (Adjustable for 1-3/8") |
| Housing | Steel, Zinc Dichromate Finish |
| Warranty | 5-Year Limited Warranty |
Why Choose the Sargent 28-7U15 LB?
For contractors and facility managers at hospitals, schools, and corporate offices, the Sargent 28-7U15 LB represents a high-value investment. It provides the architectural continuity of a professional straight lever with the mechanical strength required for 24/7 public use. By choosing the 7-Line, you gain a fire-rated solution that installs quickly and maintains a rigid, secure profile for years to come.
Ideal Applications:
- Commercial Office Corridors: Providing a sleek, uniform look across hallway doors.
- Medical Facilities: Durable enough for the constant traffic of a healthcare clinic.
- Government Buildings: Grade 2 performance that meets strict public building standards.
- Educational Common Areas: A fire-rated solution for breakrooms and supply closets.
| Finish with BHMA code | 626 - US26D Satin Chrome or 613 - US10B Oil Rubbed Bronze or 613E - US10BE Oil Rubbed Bronze Equal or BSP - Black Suede Powder Coat or 605 - US3 Polish Brass or 606 - US4 Satin Brass or 612 - US10 Satin Bronze or 625 - US26 Polish Chrome |
| Backset | 2-3/4" Backset or 2-3/8" Backset |
| Brand | Sargent |
| ANSI Cyl Lock Function | F75 - Passage |
| Trim Design | LB |
| Series | Sargent - 7 Line |
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