Sargent 68-4121 Chassis Assembly for 80 Series Exit Devices — Left Hand Reverse (LHR)

The Sargent 68-4121 is an OEM chassis assembly engineered for the Sargent 80 Series exit device line. Handing: Left Hand Reverse (LHR). This internal chassis serves as the core operating mechanism of the exit device: when the push bar is depressed, the push rail transfers that force to the chassis, which retracts the latch bolt to permit egress. Replacing a worn or damaged chassis with a genuine Sargent OEM part restores the exit device to factory-specified performance, ensuring reliable life-safety egress function and continued compliance with applicable fire and egress codes.

Institutional Grade Features & Benefits

• OEM Sargent Replacement Part: Manufactured to the same tolerances and materials as the original factory chassis, ensuring a precise fit and dependable operation within the 80 Series exit device.
• Restores Core Egress Mechanism: The chassis assembly is the functional heart of the exit device — replacing it renews the push-bar-to-latch retraction cycle that provides safe, code-compliant exit.
• Correct Handing for LHR Doors: Specifically configured for Left Hand Reverse (LHR) applications; a handing diagram accompanies the listing for reference.
• Reduces Full Device Replacement Cost: Sourcing only the chassis assembly instead of an entire exit device unit minimizes material costs and installation labor while maximizing service life of the existing 80 Series hardware.
• Supports High-Traffic Institutional Environments: The 80 Series is widely specified in schools, hospitals, government buildings, and commercial facilities — this chassis maintains the performance standards those environments demand.
• Compatible with Multiple 80 Series Models: Direct-fit replacement for AL-8762 (Alarmed) and GL-8762 (Guarded Latch) exit device models within the Sargent 80 Series.

Technical Specifications

• Compatible Exit Device Models: AL-8762, GL-8762
• Device Series: Sargent 80 Series
• Handing: Left Hand Reverse (LHR)
• Part Type: Chassis Assembly
• Part Number: 68-4121
• Brand: Sargent
• Product Class: Exit Device Component

Technical Details

Door Handing Reference

Parts List Illustration