4-Inch Inline Duct Fan: Small Vent Fan Fit 4" Duct | 76 CFM 12W Through Wall Fan for Bathroom Vent Room Basement Greenhouse Attic Kitchen

Put this in vent in bedroom of camper to pull the cold air better. Works GREAT! Ran cord across the ceiling to plugin. Makes a big difference on the air coming from that vent. Plan to get another one for the other vent. Quiet and pulls the air.

Its a decent little 4" fan that seems to work fine and doesn't make a ton of noise. However, it doesn't move much air, just be warned. I bought it to cool a 4 foot x 4 foot closet that contains my 125k BTU combi boiler for hot water and heating in my house. It brings in outside air directly through an outside wall and even when its 20 degrees outside it still can't even keep the closet at 70 degrees. And thats a 4x4 foot closet. It just doesn't move enough air.

I am using this to vent a small laser enclosure. It doesn't move a lot of air, but it is adequate for my purposes. It is quiet also.

I needed something more in the open. It's too loud for that. I found a voltage regulator that took it down half speed. It turned out okay. But it might have been nice to have the speed built in. Noise is the only thing I'll complain about. Stuff it away in the attic and you might never her it.

This fan appears to work reasonably well, though I do not have a flow rate meter to test the cfm rating. What I did notice was that I didn’t need the speed controller I bought with it as a result of the top speed being as quiet as it was. I mounted it near the outflow from the secondary lint trap only a few feet from the drier and wired it so that it I only turned on when the drier was on. It was quiet enough that it was almost impossible to hear the fan above the noise from the drier. I was very pleased with this. As t seems that for these types of fans, they are either cheap and very noisy, or quiet and very expensive. I am looking to move my drier outside vent to a better more distant location and if I do, I’ll need another fan and will happily buy more of these.

I built a "cold closet" in my basement that serves as a root cellar. I store lots of veggies in it from our garden over the winter. I included a duct with this fan inline that would pull in outside air into the cold closet when the temp was cold enough (I designed a micro controller with a thermostat to monitor the temp and turn the fan on or off). This little fan lasted for 6 years before it finally died! It was intermittently being turned on and off. I have no idea how many hours it ran, but I couldn't be more satisfied. It finally quit after 6 years and I ordered another exactly like it. I just hope they're building the new ones the same as the one I bought 6 years ago.

This fan will not/cannot be fully bogged down. I'm trying to say that no matter what kind for restriction you put on it, it does not slow down. It keeps sucking/blowing air through it no matter how you try to cap it off. This is not a good thing either. I bought the fan to remove unwanted air from a tent and it cannot be bogged down. There is seriously something wrong with this product. How can an inline fan not be restricted? I see the hole where the wire connects to the motor and tried capping that off with silicone, but it didn't make a difference. I know I am not not doing something right. Just really pissed that this fan seems like a sham.

It may sound noisy and rickety but it has been solid and reliable for me. The flow rate isn't the greatest but if it works for you and you don't mind some noise it's really a good performer. I recommend it.

Ok first. I'm in Australia and it came with an AU plug. This wasn't expected but appreciated. I've read most of these reviews and they swing from one extreme to another. So I'm hoping this is balanced enough that you'll understand what you're buying. It's approx. As loud as a cheap Bunnings rotating floor fan on low. Noticable in a quiet room but not obnoxious. My previous comparison to the floor fan holds true for the suction/airflow the fan produces although you need to note it's tiny compared to the floor fan so it's highly concentrated. I've uploaded a video that attempts to demonstrate the airflow by lifting up a folded officeworks catelogue... Because that's a standard measurement of airflow in Australia 🦘. Solid plastic construction. No complaints re:build quality here. Solid little unit. Bottom line is this is great bang for your buck, set your expectations and you won't be dissapointed. I would have rated this 4/5 but the fact it's soooooo much cheaper than it's competition pushed it to a 5. I'll modify this review after I've had it running for a long period of time if it fails. If there's no retort here, it's still running and keeping me happy.

It is portable and easy to use on auto restoration when welding in position on Car bodies

VERY weak air flow, waste of money......

MY PERSONAL REVIEW Q: does this fan work? A: Yes, however it is pretty weak and once you install ducting onto it. so its okay ish if you plan on not using ducting. Q: is it big or small? A: very very small Q: does it feel cheap? A: yes, also very fragile i would save another 10-20 bucks and buy something else to be honest