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Old 03-21-2015, 05:08 PM   #21
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If one of your vents has the high volume Create-A-Breeze type fan, I recommend you don't put a Camco cover over it. The Camco is fine for a vent without a fan.
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Old 03-21-2015, 05:12 PM   #22
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WHY? What would be the problem? I do have the Create-a-breeze fan
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Old 03-21-2015, 05:19 PM   #23
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I believe the Camco severely restricts the airflow on a powered fan, that's what I have read and understand....if it will even fit
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Old 03-21-2015, 05:19 PM   #24
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Have a look at this video to see the effect of a cover that's not intended for the high volume fans.

I don't know if it would be detrimental to the fan but it definitely affects the volume of air that it moves.
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Old 03-21-2015, 05:25 PM   #25
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Just called the local RV shop. Here's the reason they suggest the Maxxair Fan Mate over the Maxxair II or the Camco. It's the design of the louvers and their location. Not the opening size, since they are almost the same between a Fan Mate and the Camco, and the Maxxair II has more opened space for airflow.
The air inlet; louvers on the Fan Mate are almost horizontal vs. vertical; less likely for any water to enter.
However, he said they have installed Camco covers at a customers request on fantastic fans and they have worked ok and only a few complaints.

Thanks...video is very interesting.


BUT...Looking at the Ultra breeze, it might not even work on my Fan-Tastic fan. I don't have the perimeter bolts required to install it. I guess I have what is called a clamp style mount for the fan.
Just wrote the company to see if there are alternative mounting brackets for the Ultra breeze.
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Old 03-21-2015, 05:52 PM   #26
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I had the Camco vent covers on my last trailer. The vent would only open about 3/4 of the way as others have said but my fan still worked fine. They are great for the price and were easy to install.
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Old 03-21-2015, 06:19 PM   #27
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In the video, the first cover is the standard Camco, the second is a MaxxAir II. I don't know what the third and fourth are. I would think the fan in the video is running at its maximum speed, so at lower speeds the MaxxAir II might be OK. But I definitely wouldn't use the standard Camco cover on a high volume fan. On my previous HTT, I had a Camco on the vent that didn't have a fan. For that application, it's fine.

These higher end covers are attempting to balance larger openings for air flow with preventing water (rain) penetration.
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Old 03-21-2015, 06:29 PM   #28
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Have used a std MaxxAir cover on our power vent in the bathroom for 3 yrs with no problem. The vent lid will not open all the way, but will raise far enough to let the fan work just fine.
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Old 03-21-2015, 07:28 PM   #29
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After watching the video, the units made for powered vents are clearly the way to go. If I spent that much money on the fan, it seems stupid to kill the air flow trying to cheap out on the cover.
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Old 03-21-2015, 07:35 PM   #30
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I agree; if it can be mounted without drilling into the roof.
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