VIVOSUN AeroZesh S4 Inline Duct Fan, Quiet 4" 208 CFM Ventilation Exhaust Fan w/EC Motor and GrowHub E42A Temperature Humidity WiFi-Controller - for Heating Cooling Booster, Grow Tents, Hydroponics

Badass fan and everything Vivosun in my opinion is really freaking awesome and it’s affordable

Works great. Super quiet!

Very quiet works very well compared to my old fan that’s bearings were wore out moves a lot of air for the price and the remote is super dope to change levels or modes

Best one yet great quality

Great quality fan. Do your research to mount. Use for grow room with zero problems just had to DIY mounting to ceiling. Keep it at 50/10 timer and usually never above level 5. Above level 5 fan speed its get loud! As it should but be forewarned max fan speed is shop vac decibel level.

Ramping up my laser engraving business required me to find some kind of exhaust fan to handle the fumes/smoke. I was extremely pleased to come across this one! Well built and VERY quiet in the lower speeds. Even at the lowest speed, it will easily handle the smoke for simple engraving. Upping the power to around 5-6 vastly increases the air flow while staying tolerably quiet. At its highest speed, it's a BEAST. I hadn't secured on vent coupler and it blew it off! While this is not the cheapest fan you'll find on Amazon, I feel it's a very good value and the build quality should provide years of carefree service!

I ABSOLUTELY LoVe this fan and grow app!!! Makes it a lot easier to manage my girls.....💯❤️

Powerful