Sargent 28-2491 Non-Rated Bottom Latch | For 3727 Exit Devices

The Sargent 28-2491 is a genuine OEM replacement bottom latch assembly specifically engineered for Sargent 3727 Surface Vertical Rod (SVR) Exit Devices. Designed for use on non-fire rated doors, this kit includes the complete internal latching mechanism and a protective EN (Aluminum) finish cover. This assembly ensures that the vertical rod remains securely engaged with the floor strike, providing essential perimeter security and maintaining the door's structural alignment.

Professional-Grade Features & Benefits

• Direct 3727 Series Compatibility: Precision-calibrated to interface perfectly with the vertical rods and lift-members of the Sargent 3700 series architecture.
• Non-Rated Optimization: Engineered specifically for "Panic Hardware" applications where a fire-life safety rating (12-prefix) is not required.
• Architectural EN Cover Included: Comes with a factory-finished aluminum cover to protect the latch mechanism from dust, floor-cleaning chemicals, and foot traffic.
• Smooth Latch Retraction: Features a heavy-duty internal spring and slide assembly that ensures the bolt retracts fully, preventing "floor dragging" during the opening cycle.
• OEM Precision Fit: Replacing worn bottom latches with genuine Sargent parts restores the original security specifications of the opening without the need for field modifications.

Technical Specifications

• Model Number: 28-2491
  
• Part Type: Bottom Latch Assembly with Cover
• Compatibility: Sargent 3727 Surface Vertical Rod Devices
• Finish: EN (Aluminum)
• Application: Non-Fire Rated Openings Only

The Sargent 28-2491 is the most common repair part for SVR devices in high-traffic school or retail environments. Because the bottom latch is located at floor level, it is susceptible to damage from carts, salt, and debris. If your vertical rods are "hanging up" or the door is difficult to push open, the internal slide in the bottom latch is likely bent or clogged. Replacing the entire 28-2491 assembly is often faster and more reliable than trying to clean a seized mechanism.

Installation Note: For the bottom latch to engage the floor strike consistently, the door must be perfectly plumb. We highly recommend anchoring the 3727 device chassis using high-strength thru bolts. If the device is loose, the vertical rods will vibrate out of adjustment, putting excessive lateral pressure on the 28-2491 latch bolt and eventually causing the internal mechanism to snap or bind.