Sargent LC-12-8904-J-ETL Fire Rated Mortise Exit Device, Night Latch, For 37-42" Dr Widths, Less Cylinder

The Sargent LC-12-8904-J-ETL is a fire-rated mortise exit device built for high-traffic commercial openings that demand reliable egress and durable performance. Configured with night latch function, it allows free egress at all times while the outside J-style lever provides keyed entry when a cylinder is installed. This model is designed for door widths ranging from 37 to 42 inches and ships less cylinder (LC), giving installers flexibility to pair it with the preferred keying system. As part of Sargent's 80 Series, it combines a robust mortise lock body with trusted fire-rated construction, making it a dependable choice for schools, hospitals, and institutional buildings.

Features

• Fire-rated mortise exit device suitable for labeled door and frame assemblies.
• Night latch (8904) function allows free egress with keyed outside entry.
• Sized for door widths between 37 and 42 inches.
• Ships less cylinder (LC) for custom keying flexibility.
• ETL trim with J-style lever for a clean, ergonomic grip.
• Heavy-duty construction engineered for demanding commercial traffic.

Functional Details

The 8904 night latch function provides free egress through the push bar at all times, while the outside lever remains locked and requires a key to retract the latch and gain entry. This arrangement is ideal for secured exterior exits that still allow authorized re-entry.

• Exit only, with latch retraction by key from outside.
• Key retracts latch bolt for entry.
• Push bar provides free egress at all times.

Included Components

This device includes the mortise exit device chassis, push bar mechanism, and ETL lever trim with J-style lever. A mortise cylinder is required for keyed operation and must be ordered separately.