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Accentra MO 4628LN Grade 2 Communicating & Exit Function Lever
Function Information:
- Latchbolt operated by inside lever
- Blank plate outside
- Minimum clearance of 1-1/2” between doors
- Deadlocking (guarded) latchbolt
- ANSI Function F111
- Should be used only where rooms have more than one entrance
The Accentra MO 4628LN Exit Latch (formerly Yale) is a high-intent architectural solution designed for specialized commercial openings. This Series 4000 Grade 2 Standard Duty cylindrical lock is engineered for Communicating or Exit Functions (ANSI F111), making it the premier choice for twin communicating doors or exit-only applications where space is at a premium and single-sided operation is required.
Featuring the modern, clean-lined MO (Monroe) lever design, this hardware provides a professional aesthetic for hotel suites, adjoining office spaces, and utility exits. With a completely blank rose on the exterior and a functional lever on the interior, it is specifically designed for rooms that possess at least one other point of entry.
Specialized Design & Performance
- Exit/Communicating Function (ANSI F111): The latchbolt is operated exclusively by the inside lever. The exterior features a blank plate with no lever or cylinder, ensuring one-way security.
- Low-Profile Clearance: Specifically designed for installations requiring a minimum clearance of 1-1/2" between doors, perfect for back-to-back communicating door configurations.
- Guarded Security: Includes a deadlocking (guarded) latchbolt that prevents unauthorized retraction and protects against "shimming" attempts.
- Commercial Grade 2 Strength: Certified ANSI/BHMA A156.2, Series 4000, Grade 2 for reliable durability in standard-duty commercial settings.
- Safety & Compliance: UL-cUL listed for fire doors up to 3 hours and meets all ADA A117.1 Accessibility Codes for the interior lever.
Technical Specifications
| Feature | Details |
| Manufacturer | Accentra (Formerly Yale) |
| Model Number | MO 4628LN |
| Function | Communicating / Exit Latch (ANSI F111) |
| Lever Style | Monroe (MO) |
| Grade | Grade 2 Standard Duty |
| Door Thickness | Adjustable 1-3/8" (35mm) to 1-3/4" (44mm) |
| Backset | 2-3/4" (70mm) Standard |
| Strike | ANSI 4-7/8" x 1-1/4" x 1-1/4" (ASA Strike) |
| Latchbolt | 1/2" (13mm) Throw Deadlocking |
| Exterior Trim | Blank Plate (No Lever/No Operation) |
| Handing | Non-Handed / Field Reversible |
| Warranty | 3 Year Limited Warranty |
Professional Configuration
The Accentra MO 4628LN is engineered to solve specific door-clearance challenges without sacrificing security. While these cylindrical lever locks are supplied with optional thru bolts, the final installation of the thru bolts remains at the discretion of the professional installer, ensuring a secure fit tailored to the specific door material and stability requirements.
| Finish with BHMA code | 626 - US26D Satin Chrome or 613E - US10BE Oil Rubbed Bronze Equal |
| Brand | Accentra (formally Yale Security) |
| ANSI Cyl Lock Function | F89 - Exit Latchset |
| Trim Design | MO - Monroe Lever |
| Series | Accentra - 4600 Series |
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