Hon&Guan 4 Inch 212 CFM Air Filtration PRO Kit for Grow Tent Ventilation System, 4" Inline Duct Fan with EC Motor, Smart Temperature Humidity Controller, 4" Carbon Filter & 8 Ft Ducting

This fan is almost exactly the same as the more expensive spider farmers style fan system. The controller works great. The instructions are not the greatest but if you youtube instructions for the spider farmers model it will help you learn this one bc they are the same. Holding up and down arrows will turn the setting off for each setting so if you dont want the alarm on for example just switch to that setting and hold arrow up n down and then it turns it off. Other than that its pretty simple to figure out and my tent has maintained 74 degrees since installing it. Finally a good purchase that was worth the $ spent. So I highly recommend this item

Very easy to assemble, very, very quiet. Can have it on and work on my computer at the same time with no noise pollution. I use it to exhaust my smoke from smoking to the outside without having to use an air cleaner or fan.

They work well, no complaints

Everything was exactly as advertised

Actually really good quiet the fan speeds great for any size tent actually came with an extra carbon filter just got it so don't know how long it's going to last but it's been set up for almost 3 months and it's worked great and very easy to set up

Easy setup. Great suction. Enough to hold filter in place!

Been running it for a week now and so far so good. I love how compact the fan is and it came with a good size carbon filter so it’s less air resistance on the small 6w 4” fan. Super quiet too, you can barely hear it when you’re just around the corner (see, or should I say hear video). The 130 cfm rating on the fan seems to be plenty for my little 2’x3’x5’ tent cuz it’s workin like a champ so far at half speed, and still quiet at full speed. Great value and easy functionality with the speed dial. Fan is mostly plastic but sturdy. Only complaint is the ducting is a little smaller than the end of the fan it goes onto, so I really had to twist it to open it up enough to wiggle it on there but no big deal. Would still buy again, no reason to spend more.

Everything LOOKED fine out of the box. Sleek, cool little fan setup. But once I got everything together, I knew this just wasn't going to work. On it's own, the fan was putting out a DECENT (not great) flow of air, but once the full length of tube was on, what was coming out the end was almost nothing. In NO way was it enough to work for what I needed it for. I didn't find it terribly loud, and for the money, you get a lot, but it just wasn't powerful enough, which I guess makes sense. You get what you pay for.