The XT Fan Upgrade SET is an upgrade for ALEXA, ALEXA Plus, ALEXA Plus 4:3, ALEXA M and ALEXA Studio that replaces the fan in the ventilation shaft with an even more silent fan.
Includes:
K4.74112.0 - ALEXA XT fan
K4.74004.0 - ALEXA XT ventilation grille

- Upgrade instructions
Note: This upgrade can be performed by any ALEXA customer.