LiL DiHo 15W Solar Powered Fan, Solar Fan for Outside, Shed, Chicken Coop, Greenhouse with Two IPX7 Waterproof Fans 14.2Ft On/Off, DIY Cooling Ventilation Project (15W/12V)

Just bear in mind that if there isn't enough sunlight, it will not perform correctly. It does not have a way to store the power from the solar panel. Otherwise a decent piece of equipment.

I purchased three of these fan for my large chicken coop, one for exhaust and to to blow fresh air into the coop. They worked fine in 100+ degree weather.

It took two days to get the thing charged, and then only one of the two fans is working - somewhat. Barely puts out any air. It's too small to keep my outside cats cool. I'm returning it...

The only reason I would not give this setup 5 stars is because there is no relay/sensor for the fans to simply not kick on until they have enough to simply run. This leaves them whistling a very high pitch noise for hours on end unless you physically turn them on and off.This means that you cannot just leave them on at your dog house or chicken house without having it drive your critters mad with the ever long whistling in the morning and evening.I will be using this in the greenhouse where it seems there will be less of a chance of hearing the whistling....But they do work well when the sun is out and the panel is well built.

Keeps my shed much cooler and no musty smell anymore