I Ordered this fan for my small chicken coop. Living in Florida, there is always sun everywhere, so the coop can get stagnant during the day and cause any chickens setting to be uncomfortable. This solar fan Only works when there is sun directly on it. In fact, any shade causes it to stop or slow to a crawl. My coop gets a few hours of sun, and then the rest of the day it's in the shade, so essentially I only need it running for those few hours. The panels are a nice solid material that are ultra light, but definitely can take a hit from hail or a branch without getting damage. The two panels each run one fan, and have separate connections to each fans wiring. The connections are plug and play and set-up takes 30 seconds. The dual fans are of high quality with a nice metal grill to suck air in, and a covered plastic grill to keep beaks, feet, and combs out of the blades. When in direct sunlight, the fan is super quiet, but turns so fast, it's like a radiator truck fan. It moves a lot of air when fully spinning. Whether it's spinning super fast, or just crawling along, you can't hear the fan at all. Definitely a quality fan with no need to worry about batteries or external electrical connections. This fan can be placed anywhere you can think of, and you will be extremely happy with the results.