Sargent 68-4078 Chassis Assembly for AL-12-8816 & GL-12-8816 Exit Devices (80 Series, RHR)

The Sargent 68-4078 is a genuine OEM Chassis Assembly engineered for the Sargent 80 Series exit device platform. This right-hand reverse (RHR) chassis is the core operating mechanism at the heart of your exit device: when the push bar is depressed, the push rail transfers force directly to this chassis, which retracts the latch bolt to allow immediate egress. Replacing a worn or failed chassis restores the critical life-safety function of your panic hardware without replacing the entire exit device.

This part carries device-model prefix designations that are life-safety significant. AL- denotes an Alarmed configuration, GL- denotes a Guarded Latch configuration, and 12- indicates a Fire-Rated assembly. The Sargent 68-4078 is not interchangeable across different prefix families — always verify the full device model designation before ordering.

Institutional Grade Features & Benefits

• Genuine OEM Sargent Component: Factory-original chassis assembly engineered to exact tolerances for the 80 Series exit device, ensuring reliable fit, function, and code-compliant performance.
• Restores Core Egress Mechanism: The chassis directly drives latch retraction when the push bar is actuated — replacing this assembly returns the exit device to full, dependable panic-hardware operation.
• Fire-Rated & Alarmed/Guarded Latch Compatible: Verified for use in AL-12-8816 (Alarmed, Fire-Rated) and GL-12-8816 (Guarded Latch, Fire-Rated) configurations — prefix-specific and not substitutable across device families.
• Right-Hand Reverse (RHR) Handing: This chassis is handed RHR — confirm door handing before ordering (see handing diagram accompanying the listing).
• Reduces Downtime on Life-Safety Hardware: A targeted chassis replacement avoids costly full-device swap-outs, minimizing door downtime in schools, hospitals, commercial buildings, and other high-traffic facilities.
• Designed for 80 Series Platform: Compatible exclusively within the Sargent 80 Series exit device family for the specific model prefixes listed — always match the full device designation.

Compatible Exit Device Models

The Sargent 68-4078 Chassis Assembly is compatible with the following full-designation Sargent 80 Series exit device models:

• AL-12-8816 — Alarmed, Fire-Rated
• GL-12-8816 — Guarded Latch, Fire-Rated

Note: The device-model prefix (AL-, GL-, 12-) is life-safety relevant. This chassis is not interchangeable with units bearing different prefixes. Verify the complete model number on your existing exit device before purchasing.

Technical Details

Door Handing Reference

Parts List Illustration