Reddit reviews MAXXAIR Vent 18.12 00-05301K Maxxfan DLX Vent 12V White

This maxxfan is under $185.
https://www.amazon.com/Maxxair-0005301K-MAXXFAN-5301K-WHITE/dp/B016MWZH0M/ref=sr_1_6?ie=UTF8&qid=1511334692&sr=8-6&keywords=maxxfan

I'd question how well a simple little $30 fan will work. The Maxxfan is a known quantity. If you decide to go with what /u/biased_user_agent suggested I would actually go out the side instead of the roof. I think that may be easier to find an appropriate rain cover to prevent water ingress.

If the 5100 is too pricey, I would still recommend the 5301 before you go down to the 4000k or fantastic fan. Fantastic fans are prone to breaking and having this rain guard is a life saver. You don’t want water dripping through in the middle of the night whilst your asleep.

Plus, if there’s anything to not be stingy about, it’s your ventilation.

On Amazon i saw the 5100 was $210 and the 4000k was $130. You just gotta drop the extra $80 and know that it’ll be worth it completely.

Here’s that other one
MAXXFAN DLX 5301K WHITE https://www.amazon.com/dp/B016MWZH0M/ref=cm_sw_r_cp_api_ikr1AbPA3KDDC