Wathai DC Cooling Fan 12V 80mm Cooling Fan 80mm x 38mm 8038 High Speed Dual Ball Bearing PWM Case Fan

using this with a temp sensor to keep a inverter and Lithium battery compartment cooled. I'm pulling air from a AC area and forcing into a compartment below. I was concerned about volume of air and noise level. The amount of air is incredible and it's louder than what I had in it but not really that bad. It's a thicker fan so I guess how they get the CFM that I needed. I've ordered a second one along with the duct work w flange. Also it only pulls 1 amp. It's under the bed and if it's quite in RV you can hear it but it won't be enough to cause a issue. I comes with 4 wires on a connection that I was able to pop out the red and black and slide into a connecter that was used with other fan. It comes with two fan covers which is usually extra. I wish it came with the connection that would plug into connection on fan

I got these to replace my aging bronze bushed 80mm exhaust fans, my case uses 4 80mm fans for exhaust. These things move a ton of air, they seem well made. They are loud, i already knew this, i could care less about having a silent case. I ran them for a short time at 100%, was like an SR71 Blackbird spooling up for take off and stuff began blowing around the wall. They create a lot of air pressure. Presently running them at 30% until the case temps climb up

Amazing

Works perfectly for my Asus motherboard. Not sure what other reviews are talking about the connection not working. Yes they are loud at 100% duty cycle. But if you know what your doing, they will cool a mining card at 50% duty cycle no problem! Highly recommend.

I powered this thing up on my bench with my lab power supply @ 12dc and it started moved due to the exhausted air. It is VERY loud @ 12vdc and I found that 8vdc was a good compromise between airflow and noise level. I use it in an external NAS drive case. It is heavy duty and I love it. Oh, and it came with 2 grilles and mounting screws with nuts. I didn't expect that.