Sargent 28-10XG37 LL Classroom Function, Cylindrical Lockset
Function Information:
The Sargent 28-10XG37 LL is a premier Grade 1 Cylindrical Lock engineered for the demanding security needs of educational and institutional facilities. As a part of the industry-leading Sargent 10X Line, this lockset is purpose-built for high-traffic "Classroom Function" (ANSI F84) applications. It allows the outside lever to be locked or unlocked by key, while the inside lever always remains operative for immediate, life-safety egress. Designed to exceed standard durability benchmarks by up to 20 times, the 10XG37 provides an unbeatable combination of vandal resistance and long-term reliability.
Maximum Security and Institutional Durability
The Sargent 10XG37 is built to withstand extreme physical abuse that would cause standard commercial locks to fail. It is UL verified to exceed 20 million cycles, offering a massive service life advantage over traditional Grade 1 hardware. In security testing, it resists over 3,100 in-lb of abusive torque and 1,600 lbs of offset lever pull. Its freewheeling locked lever design allows the outside handle to rotate freely when locked, preventing vandals from using leverage to snap internal components.
Engineered for Reliable Life Safety
This lockset is specifically designed for the safety of students and staff. Because the inside lever is always free, occupants can exit a room instantly without needing a key or special knowledge, ensuring full compliance with NFPA 80 and ADA accessibility standards. The linear LL lever features independent return springs to eliminate lever sag, and the device is UL/cUL Listed for all 3-hour fire-rated openings.
Key Product Features
- Classroom Function (F84): Key in the outside lever locks or unlocks the handle; inside lever provides constant free egress.
- Extreme Cycle Life: UL-verified for 20 million cycles, ensuring the lowest total cost of ownership for large facilities.
- Vandal-Proof Engineering: Resists over 3,100 in-lb of torque—2.6 times the requirement for ANSI/BHMA A156.2.
- Superior Latch Performance: Includes a stainless steel deadlocking latch with a 1/2" throw, designed to operate even under 100 lbs of latch preload.
- ADA & Fire Rated: Meets ANSI A117.1 standards and is rated for use on 3-hour fire doors.
- MicroShield® Option: Available with an antimicrobial coating to inhibit the growth of bacteria and mold in school environments.
Technical Specifications
| Feature | Details |
| Function | 37 Classroom (F84) |
| Series | 10X Line Heavy-Duty Cylindrical |
| Lever Style | LL - ADA Compliant |
| Backset | 2-3/4" Standard (2-3/8", 3-3/4", 5" options) |
| Strike | 808 Curved Lip ANSI 4-7/8" x 1-1/4" |
| Door Thickness | 1-3/4" to 2" (Standard adjustment) |
| Cylinder | Conventional 6-Pin, LA Keyway (Standard) |
| Handing | Non-handed (Fully reversible) |
Ideal Applications
- Schools & Universities: High-abuse classroom doors requiring key-controlled security.
- Municipal Buildings: Public offices where entry must be restricted after hours.
- Healthcare Facilities: Patient wings or staff areas where secure, easy egress is mandatory.
- Manufacturing Plants: Built to withstand the constant vibration and heavy use of industrial sites.
Ordering & Installation Information
The Sargent 28-10XG37 is designed for rapid deployment, capable of being installed in under a minute with standard door preparation. For doors thicker than 2", please specify the 31- Option. This chassis is compatible with all Sargent Key Systems, including Degree®, Signature, and Keso, allowing you to maintain strict key control across your entire campus.
| Finish with BHMA code | 626 - US26D Satin Chrome or 613 - US10B Oil Rubbed Bronze or 613E - US10BE Oil Rubbed Bronze Equal or 605 - US3 Polish Brass or 606 - US4 Satin Brass or 612 - US10 Satin Bronze or 625 - US26 Polish Chrome |
| Freewheeling Option | Regular Lever or FW Prefix - Freewheeling Locked Lever |
| Sargent Cylinder Options | KD - LA Kwy Keyed Different or SC - Schlage C Kwy 0 Bitted or 60 prefix - Sargent LFIC Prep Less Core or 70 prefix - Best/Falcon SFIC Prep Less Core or LC - Less Sgt Cylinder |
| Brand | Sargent |
| ANSI Cyl Lock Function | F84 - Classroom |
| Trim Design | LL |
| Series | Sargent - 10X Line |
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