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Sargent 68-3878 Mounting Rail Insert – J-Narrow | OEM 80 Series Exit Device Replacement Part
The Sargent 68-3878 Mounting Rail Insert (J-Narrow) is a genuine OEM replacement part engineered specifically for the Sargent 80 Series exit device. The J-narrow rail stock size designation indicates compatibility with doors ranging from 37 inches to 42 inches in width, making it the correct insert for narrow-to-standard width door applications within that range. Whether you are restoring original factory performance or completing a repair on an existing 80 Series panic hardware installation, this authentic Sargent part ensures precise fit and reliable function without compromise.
Institutional Grade Features & Benefits
- Genuine OEM Component: Manufactured by Sargent to original factory specifications, ensuring direct compatibility and proper fit within the 80 Series exit device rail assembly.
- J-Narrow Rail Size: Designed for doors measuring 37 inches to 42 inches in width — verify your door width before ordering to confirm the J size is correct for your application.
- 80 Series Specific: Engineered exclusively for the Sargent 80 Series exit device platform, maintaining the integrity of the original hardware installation.
- Precision Replacement: Using an authentic OEM mounting rail insert avoids the fit and function issues that can arise from aftermarket substitutes, supporting long-term reliability of the exit device.
- Simplified Maintenance: Stocking the correct OEM rail insert minimizes downtime during repairs or refurbishments on existing 80 Series exit device installations in commercial, institutional, and industrial facilities.
Technical Details
| Feature | Details |
|---|---|
| Brand | Sargent |
| Model / Part Number | 68-3878 |
| Part Type | Mounting Rail Insert |
| Rail Size Designation | J-Narrow |
| Door Width Range | 37 inches to 42 inches |
| Product Class | Exit Device Replacement Part |
| Series Compatibility | Sargent 80 Series Exit Device |
| OEM Status | Genuine Sargent OEM Part |
Applications
The Sargent 68-3878 J-Narrow Mounting Rail Insert is the correct choice for maintenance technicians, door hardware distributors, locksmiths, and facility managers performing service or refurbishment on Sargent 80 Series exit devices installed on doors in the 37- to 42-inch width range. Typical deployment environments include commercial office buildings, schools, hospitals, government facilities, and industrial properties where Sargent 80 Series panic hardware is already in service. Always cross-reference the existing rail size on the device before ordering to confirm the J designation matches your installation.
| General - US Finishes | US32D - Satin Stainless Steel/ 630 or US3 - Polished Brass or US4 - Satin Brass or US10 - Satin Bronze or US10BE - Oil Rub Bronze Equal |
| Brand | Sargent |
| Series | Sargent - 80 Series |
| Part Type | Part |
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