iPower GLFANXINLINE4 4 Inch 190 CFM Inline Duct Ventilation Fan HVAC Exhaust Blower for Grow Tent, Grounded Power Cord, Silver

Bought this as an upgrade to the exhaust fan on a Chinese K-40 Laser Engraver. Big step up from the cheesy fan they include with those things. It moves plenty of air to keep my workshop fume free. In fact, you have to be careful when cutting small lightweight pieces like cardboard. The first time I tried, as soon as the piece was cut free, it would get sucked out the exhaust and shot outside! I may add a speed controller when cutting those types of material.It's reasonably quiet during operation. I barely notice it, and it's hard to even hear over the top of other shop noises. It looks pretty durable, but I only run it a few hours a week so I can't judge it's long term reliability yet. The case is all metal construction and I think the impeller is too. Comes with an attached mounting plate so you can bolt it down. Clearance around the housing can be a little tricky though, so don't expect to just run a few drywall screws through to hold it down.If you're looking for a laser exhaust, I highly recommend this one.Update 10/2020: 2 1/2 years later and still going strong. There is a pretty thick film of soot built up inside of it, but so far it hasn't skipped a beat. I mostly cut 1/8 plywood, so it's generally just wood smoke that gets pulled through. I have heard that if you run certain types of plastic the fumes can degrade exhaust fans, but I don't do enough of it to be able to judge. No regrets on my purchase.

I bought this for my 32x32x62 Grow Tent and I couldn't be happier. I was relying on 3 crappy $6 6 inch Lorell fans to do the ventilating and create a breeze on my marijuana plants. This wasn't working well, I cheaped out on fans because I was already investing over $400 at once to get this grow started. I bought this fan a month later when the R/W/B Spectrum settings needed to be set to 100%/100%/100%, this brightness increase came with an overall temperature increase. My tent was reaching 82 degrees fahrenheit and with humidity levels of 40%-50% the plants were suffering from heat stress. This was in an air conditioned room set to 64 degrees, and still it was reaching those temps. I was uncomfortable due to the cold, and my plants were still uncomfortable from the heat.Now that I have this inline fan, I stuck some ducting down to the lamp's heatsinks to suck heat directly from the light, while the majority of the ducting is still sucking air from the tent and drawing in a nice breeze through the screens on the bottom of the tent. My temps never go higher than 75 now, averaging 72, and thats with my room now at 68 degrees. I used 2 of those 3 fans to blow directly on my 2 plants as well, I'd say my setup is pretty ideal, only missing a filter now and speed control now. I'm comfortable and so are my plants this inline fan was a win win.For those who know nothing about inline fans such as myself. If you're wondering how this fan type compares to your basic lorell 6 inch fan its pretty much incomparable. The performance of this fan is around 50x greater than the ones I was using. They do not work the same way either. inline fans create suction or air pressure, while your basic fan creates air flow. This inline fan also helps to suck out light debris that may get into the tent keeping the grow cleaner. For example small hairs from your pet, if there is enough suction inside the tent it will be launched out instead of settling on the plant or inside the tent. Or those small flying bugs that want to eat your plants.I do not use a speed controller, I have it running 100% all the time. I'm going to buy one and have it set to 85% if that's possible.

Kind of loud but not the worst. Might make for a good white noise kinda deal. Suction power is ridiculous on my 3x3x6. So far so good.

I use this in my 4x10 grow room to help control the humidity, regulate the temperatures and move some air. I do not use it with a carbon filter as the smell is not an issue for me. I use it with the iPower speed control, which I recommend. I have it on a timer so I can adjust when and how fast it runs based on the readings of the hygrometer in the grow room.As for the noise level, well I have mine in an adjacent room that is used for storage. I have a flex hose that goes through the wall to an intake vent and another hose that goes to an exhaust vent in the window. So being as it is in an adjacent room, the noise level is not something I really notice or care about really. That said, if you were to use it in say, a basement space and were you intend to spend time, the noise level would be fine I think. That is really a matter of personal tolerance. I would say the noise level is "expected".It is a very well made fan though with a smooth operation and it moves a lot of air for sure. It will work very well in a 4x4 room, but I would definitely recommend getting the speed control to help regulate how much air it draws. It also depends on how much you seal the tent/grow space too and how it's vented. I suspect that some people who are complaining about how much air it moves are not providing intake air so the fan in effect...starves for air.I suspect this fan will last a long time and can definitely recommend it for the purpose noted in this review.

The fan motor itself is not quiet but not unreasonable. The issue is this fan vibrates excessively no mater how you mount it, I tried to muffle, add rubber gaskets with no luck. It shakes the walls and can be heard very loudly one or two floors up.The suction is ok for the price, nothing spectacular but it does move air. I just can’t live with the noise and will be returning.

These are the best budget option for an inline fan, but there are no 'bells and whistles' to them. If you want the most powerful fans for the best price (and don't mind their ultra simple design and noise), this is the product for you. I've owned a few for several years, had some running 24/7 for alot of that time- and they run as good as the day I got em.Highly recommend. Ipower makes some very good products for what you're spending. Unmatched in my opinion.

安いファンを買ったのですが、余りに風力が足りなくて困った挙句コレを買いました。風力もバッチリで素晴らしい商品でした！しかし、少し大きく、風力調整の為スピコンをかいました。多分グロウテントの容量であれば200の100は大丈夫じゃないかと思います。僕の場合は160の40のグロウテントなので少々オーバースペックでした。

Good fan - meets specifications. My only complaint is that the fan is not well balanced, so it vibrates substantially. To rectify noise being conducted through the building, I suspended it using rubber hangers. This fixed the problem.

I installed this on the duct going to a far bedroom that never got enough heat or A/C, and it really helped! It works much better than the "register booster fan" I tried. Some notes:- To install it, I removed a section of round duct and replaced that with a section of flexible aluminum duct with the fan in the middle, using 4 worm gear clamps to secure the flexible ducting to the fan and to the ends of the existing ducts.- The flanges on the fan aren't very wide, I found it much easier to attach the flexible duct to the fan before putting the fan into place.- I initially screwed it to a floor joist but that made the floor "hum"! So I screwed it into a basement concrete wall and now it's very quiet.- The only place I hear it through the floor register in the room it's blowing air into, but it's no louder than running a fan or space heater in that room.- I used a "CS-TS0 miniature current switch" so the fans turn on and off with the furnace.- I also got the "iPower Exhaust Fan Speed Controller" but I found it to be unnecessary.

NEW RATING 1 / 5:Piece of garbage. After 4 month only, it become very very noizy. A huge BRRRRRRRRRRR is added over the rest of the noize. So it is now too anoying to endure inside my appartement. Muffler or not. So please... DON'T BUY THAT CRAP !!!FIRST RATING 3 / 5:Very noizy when we slow it down (electric cycling sound). So we can't have it at a slower speed for a less noizy environement... as I though to do before I ordered it. I'm pretty sad. But at the maxspeed, it work very fine and it's not too noizy. So it's ok.

Seems like good quality. I went with this one over some others as this one said UL Listed in the description. I don't really see any UL stickers on it, so I'm not really sure now. If it's not, I would have got something a bit cheaper. Anyway, I like the quality appearance. It seems fairly quiet and is smaller than I thought it looked in the picture! Hope to enjoy it for a long time to come.