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Von Duprin Mortise Exit Devices

Shop Von Duprin mortise exit devices for compatible commercial door openings, including 9875, 9975 and 8875 configurations. A mortise exit device uses a lock case fitted into the door edge. Compare the available device lengths, operating styles and selected fire-rated or electrified options, then verify the exact model against your door preparation and required function.

Start with the door dimensions, handing and outside access requirements. Match Von Duprin exit device trim to the mortise configuration, and check which components are included with the device. Browse all Von Duprin exit devices to compare latching formats, or visit Von Duprin replacement parts when servicing an existing installation.
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Choosing Von Duprin Mortise Exit Devices

Von Duprin mortise exit devices combine an exit operating bar with a lock case installed in the edge of the door. This arrangement calls for the appropriate mortise preparation as well as the mounting details for the device itself. Begin by identifying the required device family and the existing door construction. For replacement work, record the complete model number before comparing alternatives. A mortise exit device is a specific hardware assembly, so a separate mortise lock body should not be assumed to provide the complete installation.

The collection includes 9875 and 9975 models from the 98/99 family, along with 8875 configurations from the 88 Series. These families offer different operating-bar and case styles, making the existing installation and project specification useful starting points. Compare the model designation, operating function and included components together. A matching finish can help coordinate an opening visually, but it does not establish that another device will fit the same door preparation or work with the installed exterior trim.

Review door width, thickness and handing before selecting a device. Check the supported door-width range for the listed length and compare the installation template with the prepared opening. On a replacement project, include the lock-case preparation, strike and trim mounting details in that comparison. For a new opening, use the hardware schedule to coordinate the device with the door and frame. Keep those measurements and references available when reviewing the individual product specifications or discussing the order with your installer.

Outside access depends on the compatible trim and the specified function. Exit-only configurations and devices paired with exterior operating hardware serve different requirements, so check whether trim is included or ordered separately. Select trim specifically identified for the appropriate mortise application and series. Review any cylinder requirements and mounting components at the same time. For selected electrified devices, confirm the exact electrical feature, power requirements and compatible controls; the presence of an electrical option does not mean that all models operate alike.

Confirm whether the opening requires panic hardware or listed fire exit hardware, then select the exact configuration specified for the project. Before placing the order, review the full model number, device length, handing, finish and package contents as one complete selection. If the existing device only needs a service component, use the Von Duprin parts collection to match that component by series and part reference. Retaining the installed model information makes future maintenance and replacement ordering more precise.