The Sargent 10 Line 28-10G15-3-LL is a heavy-duty, Grade 1 lock designed for commercial and institutional settings. It features a 2-3/4" Backset, 4-7/8" Strike, L Rose, L Lever Design. Its multi-function lever design, interlocking lever mechanism, and built-in clutch and free-wheeling lever features provide superior security and durability. This lock is a reliable solution for access control and preventing unauthorized entry in high-traffic areas.
15-3 Exit or Communicating
1-3/4" - 2"
Std. Latch Number
Std. Latch Type
Dead Latch (Guarded)
Std. Latch Backset Dim
Latch Bore Diameter
Lock Face Size
2-1/4" x 1-1/8"
Bore Hole Diameter
Std. Strike Number
Std. Strike Type
Std. Strike Height
Std. Strike Width
Impressive strength and durability.
The SARGENT 10 Line cylindrical lock provides all that and more. With the strength to handle whatever you throw at it, the 10 Line offers the flexibility to accommodate storerooms to classrooms to access control applications. Backed by a seven-year warranty, this lock is all things to all doors.
Strength and security.
Heavy-duty design far exceeds industry testing standards. Security features provide additional resistance against vandalism and unauthorized entry.
Accommodates retrofit applications and a variety of door preparations. Easy to connect to other electrified products.
Convenient installation diagrams and pre-assemble components make for quick, easy installation in less than one minute.
Nonhanded lever designs provide for efficient warehousing.
ANSI/BHMA Grade 1 certified for cycle and strength requirements. Exceeds cycle testing standards by nine times with 9.6 million cycles and torque resistance by 1.5 times.
UL-cUL listed for 3-hour fire doors and windstorm applications
Freewheeling trim optional
Available in 21 different functions, including classroom security and electromechanical options for access control applications
Offered in 12 architectural-grade finishes matching any decor
Integrates into most existing facility key systems including Sargent security systems (Degree, Signature, KESO, and XC; also accept Schlage® and Medeco LFIC)
UL listed to the U.S.A. and Canadian safety standards Listed for 3-hour doors (double doors require 41- option)
Meets ANSI/UL 10C, Positive Pressure Fire Test of Door Assemblies
All levers conform to ADA requirements for barrier-free accessibility
Levers (L, J & P) conform to California Administrative Code Title 19 and 24
All individual components of a total door opening are required to comply with each code. Refer to the SARGENT Website (www.sargentlock.com) for specific code compliance listings for both the lock hardware and other door components.