Sargent LC-12-8904-G-ETB Fire Rated Mortise Exit Device, Night Latch, For 43-48" Dr Widths, Less Cylinder

The Sargent LC-12-8904-G-ETB is a fire rated mortise exit device built for high-traffic commercial openings that demand reliable, code-compliant egress. Configured for night latch function with the ETB exterior trim, it allows secure entry from the outside using a key while providing free egress at all times from the inside. This model is sized for 43" to 48" door widths and ships less cylinder (LC), giving you the flexibility to match your facility's existing keying system. As part of Sargent's heavy-duty 80 Series, it delivers the durability and performance expected in schools, hospitals, and other demanding environments.

Features

• Fire rated mortise exit device suitable for labeled door and frame assemblies.
• Night latch (NL) function allows key-controlled entry from the exterior while permitting free egress from the inside.
• ETB trim provides a durable lever-style exterior pull for controlled access.
• Sized specifically for doors measuring 43" to 48" in width.
• Supplied less cylinder (LC) to accommodate your preferred keying system.
• Heavy-duty construction designed for high-use commercial applications.

Functional Details

The night latch function lets authorized users retract the latch from the outside with a key, while the inside push rail always allows immediate, free egress. This setup keeps the opening secured against unauthorized entry without compromising life-safety requirements.

• Key outside retracts latch; free egress at all times from inside.
• Fire rated for use on labeled openings.

Arm Type Details

This device uses a mortise lock case that installs within the edge of the door, engaging a strike in the frame for a deadlatching mechanism. The mortise design provides strong latch engagement and is well suited for heavier doors and fire-rated assemblies.

Included Components

The package includes the 8904 mortise exit device chassis, the G (ETB) exterior lever trim, and the required mounting hardware. A cylinder is not included and must be ordered separately to complete the keying.