Hager 3870S Classroom Mortise Lockset – Grade 1 Sectional Trim

The Hager 3870S Classroom Mortise Lockset is a professional-grade security solution specifically designed for educational institutions, municipal buildings, and commercial offices. This Classroom Function (ANSI F05) set provides essential access control: the outside lever is locked or unlocked by a key from the exterior, while the inside lever is always active for immediate, unhindered egress. This ensures that classrooms remain secure from the outside while meeting all strict life-safety codes for emergency exiting.
By utilizing the Sectional (S) Trim, the 3870S offers a contemporary, low-profile aesthetic that is ideal for modern architectural projects. As a BHMA Certified Grade 1 device, it is built to withstand the rigorous daily use and high-frequency operation typical of school environments. The heavy-duty mortise lock body is constructed from case-hardened steel, ensuring smooth mechanical performance for millions of cycles.
Institutional Security & Modern Architectural Style
The Hager 3870S combines the industrial strength of a mortise lock with the accessibility of an ADA compliant lever handle. The internal components are precision-engineered to provide a solid tactile feel, ensuring the handles remain level and responsive even after years of constant operation. For a permanent and stable mount, the sectional roses are secured using thru bolts, providing a high-strength, through-the-door connection that keeps the hardware perfectly aligned and resistant to loosening.
Key Features
- Classroom Functionality: Outside lever is locked or unlocked by key; inside lever is always free (ANSI F05).
- Grade 1 Reliability: BHMA certified to meet the highest industry standards for mechanical life and durability.
- ADA Compliant: Ergonomic lever designs meet A117.1 Accessibility Code requirements for ease of use.
- Sectional Rose Trim: 2-7/16" diameter roses provide a clean, modern, and minimalist architectural look.
- Anti-Friction Latch: 3/4" throw stainless steel latchbolt with an anti-friction tongue for quiet, smooth closing.
Technical Specifications
| Feature | Specification |
| Model Number | Hager 3870S |
| ANSI Function | F05 (Classroom Function) |
| Certification | BHMA Certified Grade 1 (ANSI A156.13) |
| Trim Style | Sectional (S) Rose Design |
| Rose Diameter | 2-7/16" (62 mm) |
| Door Thickness | Standard 1-3/4" (Fits 1-3/8" to 2-1/2" doors) |
| Backset | 2-3/4" (70 mm) Standard |
| Fasteners | Thru Bolts, Wood, and Machine Screws |
| Warranty | Lifetime Limited Manufacturer Warranty |
Available Finish & Lever Options
Customize your Hager 3870S at DoorwaysPlus.com to match your facility's architectural aesthetic:
- Lever Designs: Choose from the Archer (ARC), August (AUG), or Withnell (WTN) styles.
- Architectural Finishes: Available in Satin Stainless Steel (US32D), Satin Chrome (US26D), Dark Bronze (US10B), and Bright Brass (US3).
- Cylinder Options: Conventional Schlage C Keyway standard; compatible with SFIC (Small Format Interchangeable Core) for high-security key control.
| Trim Design | WTN - Withnell or ARC - Archer or AUG- August |
| General - US Finishes | US26D - Satin Chrome or US32D - Satin Stainless Steel/ 630 or US26 - Polished Chrome or US15 - Satin Nickel or US3 - Polished Brass or US4 - Satin Brass or US10B - Oil Rubbed Bronze |
| Cylinder Options | SCC - Schlage C Keyway or Less Cylinder |
| Brand | Hager |
| ANSI Mortise Lock Function | F05 - Classroom |
| Series | Hager - 3800 Series |
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