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Mortise Exit Devices

Mortise exit devices use a mortise lock case in the door edge to provide panic or exit-device operation on commercial egress doors. This collection includes Von Duprin mortise lock exit devices in standard and fire-rated configurations for compatible commercial door preparations.

Selection depends on door width and height, device series, handing where applicable, mortise lock preparation, trim and cylinder requirements, fire-rating needs, finish, and any electrified options. Exit hardware is part of a complete opening, so confirm the exact device and door requirements before replacing or specifying components.
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Choosing a Mortise Exit Device

Mortise exit devices combine a push-bar or touch-bar device with a mortise lock case installed in the door edge. They are commonly specified where the opening and hardware schedule call for mortise-style latching while still providing exit-device operation from the egress side.

Match the device to the door preparation and the manufacturer’s device series. Door width, handing, lock-case preparation, strike arrangement, exterior trim, cylinder requirements, and finish can all affect the correct configuration. Replacement work should begin by identifying the existing device and mortise lock arrangement rather than selecting by push-bar appearance alone.

Fire-rated mortise exit devices are intended for rated openings only when the complete device, trim, door, frame, strike, and installation meet the applicable listing and project requirements. Fire exit hardware generally has different hold-open restrictions from non-rated panic hardware, so the exact model and application should be confirmed before ordering accessories or modifications.

Commercial egress openings can also have accessibility, life-safety, and electrified-hardware requirements. Review the project hardware schedule, manufacturer documentation, and requirements for the complete opening when selecting a mortise exit device, trim, cylinder, or replacement component.