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Old 05-01-2022, 05:38 PM   #1
LHaven
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Fan: auto rain lid, or cowl?

I'm planning to add a powered fan (FanTastic, or equivalent) to the simple screened roof vent over our bed.

One must-have feature is rain protection. I could get that either with a rain-sensing model that automatically closes the lid, or I could have a cowl added to the roof. The cowl has the advantage of no moving parts, but I don't know how efficient they are at keeping rain (especially driven rain) out. Another advantage of the cowl is that it kills direct sunlight, which is a bear here in Arizona (I've been keeping a Camco push-fit vent insulator in both roof vents just because).

I'm assuming the cost of the cowl and installation is going to exceed the incremental cost of the auto-close lid feature.

I'm interested in hearing people's experiences with both options.
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Old 05-01-2022, 05:44 PM   #2
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MaxxFan, no need for a vent cover and yes the rain doesn’t get inside even with the vent in operation. I have 1 at each end, 10 speed, reversible so I can circulate the air.

Link for picture only.
https://www.amazon.com/Maxxair-Vent-...29089632&psc=1
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Old 05-01-2022, 06:05 PM   #3
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Do you need a maxxair type vent cover? No. Wouldn’t add one? Absolutely. I live in New Mexico so I deal with the same sun/heat that you do. The sun is brutal on bent covers. Add a maxxair to it for the sun protection not only while in use, but year round. Also, you can leave the bent open while traveling. It creates a bit of a vacuum and pulls the heat out making your rv cooler when you get to your destination.
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Old 05-02-2022, 10:15 AM   #4
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Thanks. I was not aware of this product, and it looks perfect.

The sales material on this unit seems really short of photographs from various angles as opposed to drawings. I've found only one photo (installation, from the underside) that actually shows that there is a "window" portion at the very top to let the light through, and in that photo, the window is clear. Am I right to assume that this window is clear on the white units, and smoked on the dark units?
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Old 05-02-2022, 03:42 PM   #5
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I've been reading poor reviews of the Maxxair deluxe, are they accurate?
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Old 05-03-2022, 04:58 AM   #6
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I have 2 that are 10 speed reversible. One with a remote and I haven’t had a single issue. Previous fiver had one for 10 years without any issues.
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Old 05-03-2022, 08:42 AM   #7
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Had 3 Max Air vent covers for a 6+ years that spent the last 3 years I had the rv in the Arizona sun & had 0 issues. Would highly recommend them.
Had 3 of the cheaper brands, 1 set from Walmart & 1 cheap brand from CW, on a previous 5er that only lasted about 2 years each before getting brittle & breaking.
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Old 05-05-2022, 11:13 AM   #8
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Do you need to use the tape for the install, or just three self leveling sealer?
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Old 05-05-2022, 11:27 AM   #9
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Quote:
Originally Posted by solv3nt View Post
Do you need to use the tape for the install, or just three self leveling sealer?
Butyl/putty tape on the bottom of the flange. Cover screws and flange with self leveling Dicor.
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Old 05-16-2022, 09:37 AM   #10
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Quote:
Originally Posted by chuckster57 View Post
Butyl/putty tape on the bottom of the flange. Cover screws and flange with self leveling Dicor.
So tape between the fan flange and roof, then self leveler on top?
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Old 05-19-2022, 01:42 PM   #11
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Yes, tape between the flange and roof.
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