We have two Maxxfans, one in the front and one in the rear half bath. Maxxfans have their own built in covers. While they do not have rain sensors they do have a thermostat setting making them automatic in that mode. The one in the front bunkhouse has a ceiling fan mode as well.
Art and Karen
2013 Itasca Sunstar 35F, 2013 Ford C Max toad.
170 nights in 2013
132 in 2014
If the Fantastic Fan works anything like the Maxx Air, you will like it. I have the Maxx Air II with remote in the bedroom. I really like the thermostat feature that will open the vent and kick the fan on ata set temp. The only complaint I have is the loud beep that goes off when any button on the remote is pushed. I could live with out that feature.