WDERAIR 80mm x 25mm 12V IP67 Waterproof DC Cooling Fan Dual Ball Bearing Ventilation for RV Refrigerator Biltong Box Equipment Cabinet Exhaust 2 Pack

The media could not be loaded. It’s very straight forward, just connect 12v to it and watch her fly. This fan is particularly nice because it handles encounters with water very nicely, I’ve seen humidity condense onto the fan itself and it just keepsa chuggin’ along. These fans are also fairly quiet, if you have a means to control their speed (voltage regulator or pwm) you can get them down to be almost inaudible yet still moves a lot of air!

I used these to vent my solar equipment in my RV. They do the job as intended, but I wish they were a little faster speed. Of course, I may not like the sound if they did.

Quiet, effective air flow. Used for rv fridge. Much cheaper than rv specific products

I work with a lot of fans...a LOT. This fan is mostly average overall. It is a plus that it has ball bearings which I truly believe makes a fan last longer than floating or bushings. The floating or bushings tend to wear and get an uneven vibration which then makes it all worse. Ball bearing fans do tend to have a dB or 2 higher noise than floating or bushings, but when your fan lasts twice as long I think the tradeoff is worth it. Speaking of sound level, this does have a higher pitched sound than others but isn't so loud that I would say it is annoying. At 5V though, the high pitch sound is gone and the fan is super quite.This is a 2-wire fan which means it does not have PWM built in, no tachometer and no fan stop signal. If you have a critical setup, I would recommend you get a fan that has a tachometer and/or fan stop signal rather than this one. You will pay more for one of those which is why I still gave this 4 stars (because similar fans with similar features have similar pricing - nothing special in regards to that). You could, with a current sensor, be able to monitor if the fan is turning, but as I said above...if you need to have that feature it is cheaper and easier to implement it with a fan that already has those features.So this fan seemed to have an average amount of air flow and static pressure even though it uses a thicker body than average (average is usually 15mm). Thicker bodied fans tend to produce higher static pressure due to their design. I don't have actual airflow numbers, but I can tell you that this has enough air flow that you could put a screened filter on it and it should continue to flow a descent amount of air...but, as the filter gets dirty I also think this may struggle a little to continue pulling enough air through it. If you keep your filter clean though, I don't see this as a problem. As I said, average...which also means this is about the performance of other fans.At 12V free turning I tested this at 142mA which is less than the manufacturers claim of 160mA. Stalled current jumps to 223mA (which is actually about half what other fans do - this is good since it means less chance a stalled motor will burn out a winding). I also tested at 5V which it was able to start from without any problem. This also implies that this fan can be PWM to better control fan speed...but, I did not test this feature and without a tachometer feedback you won't know just how much your PWM signal is changing the speed of the fan. I suppose if the PWM is linearly scaled from a temperature sensor it won't matter what speed the fan is turning...rather than is it keeping everything cool. Anyway, at 5V the fan only drew 57mA but still pushed enough air to be noticeable (wouldn't do a screen filter and 5V though).Overall this ticks most of the 'ok' boxes. Price is ok, air flow is ok, sound level is ok, static pressure is ok, low voltage performance is ok...so as long as you are ok with the 2-wire setup I think you'll be ok with this fan. There are definitely better fans out there, but they also don't go for the same price these are...

These 80mm x 25mm 12V cooling fans have exceeded my expectations for such a compact size. They deliver excellent airflow while maintaining quiet operation, making them perfect for use in various applications where noise and space are concerns, like my cramped little office space. The waterproof feature is a standout aspect, offering durability and reliability even in more demanding environments and where climate control is not guaranteed. While they are on the smaller side, making them best suited for tighter spaces, their performance and value are impressive. If you need a cooling solution that can withstand challenging conditions, you're building a smaller form factor machine, or are just in love with some older case and still want it to perform efficiently, these fans are a solid option.