Sargent 12-8910J Fire Rated Mortise Exit Device, Exit Only, For 37-42" Dr Widths

The Sargent 12-8910J is a fire rated mortise exit device built for reliable egress on commercial and institutional openings. Designed for exit-only applications, it fits door widths ranging from 37 to 42 inches and uses a mortise lock body for strong, dependable latching. As a fire rated device, it supports code compliance on labeled door assemblies where positive latching is required. The 12- prefix indicates a fire rated configuration, while the J designation reflects the device trim and function. Ideal for schools, hospitals, offices, and other high-traffic facilities, this Sargent device balances durability, security, and smooth daily operation.

Features

• Fire rated mortise exit device suitable for labeled door assemblies.
• Exit-only configuration provides free egress without outside trim.
• Sized to fit door widths of 37 to 42 inches.
• Mortise lock body delivers secure, positive latching.
• Heavy-duty construction built for demanding commercial traffic.
• Part of Sargent's respected 8900 series exit device line.

Functional Details

As an exit-only device, the 12-8910J allows immediate egress by depressing the push rail, which retracts the mortise latch and releases the door. There is no outside operating trim, so the opening cannot be entered from the exterior unless separately keyed hardware is specified.