Sargent 24-29-6U15 OB Passage Knob Lockset

Function Information:  

The Sargent 24-29-6U15 OB is an industrial-grade Grade 2 Cylindrical Passage Knob Lockset engineered for high-traffic commercial openings where locking is not required. As a standout in the Sargent 6-Line Series, this hardware is designed for maximum durability in non-secure areas such as corridors, closets, and breakrooms. The 24-prefix indicates that this unit is UL Listed for use on fire doors, while the 29-prefix specifies a 2-3/4" backset, the industry standard for commercial hollow metal door preparations. Featuring the classic OB Ball Knob, this lockset provides a traditional aesthetic without compromising on structural integrity.

Engineering for Longevity and Reliability

The Sargent 6-Line is built to outperform standard commercial hardware, providing a robust solution for facility managers who require a "set it and forget it" installation.

• Commercial Grade 2 Strength: Certified to ANSI/BHMA A156.2 Series 4000, ensuring the chassis can withstand hundreds of thousands of cycles in busy environments.
  
• Corrosion-Resistant Chassis: The internal mechanism is constructed of high-strength steel with zinc dichromate plating, preventing internal rust and ensuring smooth operation even in high-humidity areas.
• Fire-Rated Safety: With its UL/cUL Listing (24-prefix), this passage set is approved for use on 3-hour fire-rated doors, maintaining the integrity of fire barriers in commercial hallways and stairwells.
• OB Ball Knob Design: The OB design offers a timeless, professional appearance and a comfortable grip, making it a versatile choice for office suites, healthcare facilities, and schools.

Versatile Passage Function (ANSI F75)

The 15 Passage Function is the premier choice for interior doors that must remain accessible at all times while providing a solid, code-compliant latching mechanism.

• Always Active Operation: Both the interior and exterior knobs always retract the latchbolt. There are no buttons, toggles, or locking mechanisms to impede movement.
• High-Frequency Performance: Ideal for high-traffic communal areas where doors are opened dozens or even hundreds of times per day.
• Universal Handing: The non-handed design allows for easy field installation on both left-hand and right-hand swinging doors.
• Secure Latching: Includes a 1/2" throw stainless steel latchbolt to ensure the door stays closed and fire-sealed when not in use.

Technical Specifications & Compatibility

Why Choose the Sargent 24-29-6U15 OB?

In busy institutional environments like schools, hospitals, and government offices, inferior hardware leads to sagging knobs and latch failures. The Sargent 24-29-6U15 OB removes that burden. By combining a fire-rated chassis with a classic ball knob design, it provides a cost-effective yet heavy-duty solution for non-secure openings.

Ideal Applications:

• Commercial Hallways: Ensuring fire-rated doors latch securely without impeding traffic.
• School Storage Closets: Durable enough for constant daily use by maintenance staff.
• Hospital Breakrooms: Reliable performance in 24/7 high-traffic healthcare environments.
• Office Suite Interior Doors: Providing a professional aesthetic match for keyed hardware.