The Von Duprin quiet mechanical solutions are ideal for applications where operational noise must be kept to a minimum.
The Von Duprin® QM option controls motion to reduce operational noise. It is available for the 996 trim, as well as 98/99 and 33A/35A rim and surface vertical rod devices. The QM trim solution provides a damper-controlled lever return.

  • 996 damper-controlled lever return
  • 98/99 and 33/35A damper controlled re-latching
  • Available pre-installed from factory or as a retrofit kit
  • Compatible with QEL, AX, RX, CD and HD

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The QEL provides electronic control of an exit device where limited operational noise is desired. It is Von Duprin’s choice solution for hospitals, libraries, museums, theaters and any other place where ambient noise is possibly disruptive.

  • Standard 2 amp power supply, enabling longer wire runs from the power source
  • QEL board has electronic LEDs, providing visual indication of any errors
  • Auto-adjust latch retraction
  • Vandal resistant

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Convert  98/99 Rim Device to QEL!