VEVOR Inline Duct Fan, 4-Inch 200 CFM with Variable Speed Controller, Quiet AC-Motor Ventilation Exhaust Fan for Cooling Booster, Grow Tents, Hydroponics

Comes with everything you need to install it. Well made and quieter than I had expected. Would buy this again. Another great product from Vevor!

Meet the requirement what I expected and running OK now

Relatively quiet, but doesn't move a whole lot of air. It works for assisting the smaller ventilation fan in my gallon laser, but may end up being swapped with somethingmore powerful in the future if I don't go to a different laser. Had for a little over a year now, and while it hasn't had any issues, it's performance isn't exactly astounding. Couldn't quite give it 3 stars, so 4 it is.

This is great! It’s a little loud but it works and is doing exactly what I needed.

Great blower. Comes with what you need to get a basic setup. I am currently using it to hold a slight vacuum inside a 3D printer enclosure and vent to outside when printing. On it's lowest setting it moves plenty of air to pull fumes out and allow printing in my office. I smell absolutely nothing in my office now. Not sure how it compares to others, but so far have no complaints.

Ive went through 5 different kind of duct fans these past couple months and I ended up ordering this one because it looked sturdy. This thing is built extremely tough and isnt very loud . It has a speed controller and is absolutely worth the money . I actually tried to send this one back because it wouldn't fit in my duct I was trying to put it in and the company refunded my money and just told me to keep it. So obviously their customer service is 10/10 . Ill use this one on my next project

I purchased 3 pieces for having spare, but 3 of them have an issue that makes terreble noice. The fan was touching the edges, and I could not fix it. Return is almost not possible

Works great on eliminating the smoke from laser printer. Good price.

Good item, works very well. It came quicker than stated which was good. Seller was very helpful, they kept me up to date all the time and were very friendly, i highly recommend.

es bueno solo que si requieren para extraer de un lugar amplio este no lo recomiendo ya que es pequeño, pero para algo pequeño funciona.

DO NOT BUY! Don't ignore the other reviews stating its loud.. They are accurate. The variable speed doesn't seem to work at all and the unit emits a concerning electrical buzz while operating. absolute trash product

Worked for 6 weeks before burning out in the controller—a seemingly known, dangerous fault. I had to pay return shipping and fight for a full refund under consumer law. They only gave in when Amazon got involved.

Device controller heats up when not in use a replacement was sent and the replacement has exactly the same fault