The Von Duprin EL33A/35A/98/99 device can be converted to the QEL device by getting the correct sized QEL baseplate conversion kit. The existing PS914 or PS873 power supply can be used.
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The conversion kit does not contain a new mechanism case cover plate. If a cover plate is desired you would need the Fire or Less Dogging Cover Plate for EL conversion kit and panic cover plate fo...
Followings are the list of the electric latch retraction EL/HDEL (hex dogging), QEL (quiet) kits:
114317-00
QELA Mod. Conv. Kit
040061-00
QELA Mod. Conv. Kit...
Current EL and QEL baseplate conversion kits can be used on all latching types of the 33/35 series (non "A" version which were manufactured prior to 2003). At one time, the obsolete black EL ...