I'm not sure that is correct. The unit appears to sit in a pre made aluminum box. The installation manual only shows the box as one piece. The unit is secured in place with screws which I can try and remove. It appreas I will have to remove the blower to get to the retractable unit.
Thanks Randy. The blower box is mounted in front of the retractable unit. I removed the cover for the blower and that allows me access to the motor/arm for the retractable I was able to push on the arm and move the unit up and then reinstall the metal screen. It works properly not.
Some models have a bottom mounted blower and some an outside mounted blower. This one the blower was mounted under the countertop, in the cabinet.