Exhaust Fan Vtronic 8" Mixed Flow Inline Duct Fan Pre-Wired Booster Fan, 570 CFM Speed Controllable Ventilation Fan for Grow Tents/Hydroponics/Bathroom/Heating Cooling Air Conditioner Booster

I am using these fans in a non-traditional way as part of a design for touring inflatables. That being said, I have some ridiculous requirements, and these fans are the best I have yet to find in the category of Low Noise (under 50db) for the strength!They are also extremely easy to install, lightweight, durable, and good looking (matters for my application).The only areas I wish could be improved are:- Speed Choices: I'd prefer an adjustable dial vs the low/high settings so more fine adjustments.- I wish they were IP67 vs IP44Despite those 2 things though, I still love these fans and will be working with Vtronic on future purchases even if they are different models to suit my needs. Their customer service has been wonderful so far and I appreciate their willingness to communicate!

I use this in my shed when working in there, wall fan pulls air in this sucks it out, so I get somewhat of a cross breeze. It's quiet enough to not bother me when working in the shed. I do not use it or leave it on regularly, although I probably will if I have to use my generator when power goes out to exhaust vent the shed. Overall it's a good fan, fairly quiet, seems to be built well, and the mounting bracket was easy to mount and it's easy to take apart to clean, sometimes it gets a lot of saw dust in it, but never had a problem so far.

I put this in a furnace duct in the basement to get more cold air to the second floor. It really helped equalize the temperature, but the fan was fairly noisy, even at the low speed..

Ordered this to replace an exhaust fan that was making some racket. The reason i picked this one was the advertised "850" CFM. Well, it was actually 850 m3/h. Which is approximately 500 CFM. The old fan was 420 CFM. So I paid 3 times as much for a fan that does just a little more than the old one. Little disappointed in the false advertisement. The way I had to mount this fan made it pretty difficult to put back together. It does seem to be well made and it is pretty quiet.

My Vtronic blower wore out after 2 winters of being the central air filtration/circulation unit for a pellet stove. I found the Vtronic wasn't available and tried the Vivosun 8" which the powerhead is plug 'n play in the Vtronic unit.

Easy to mount moves lots of air bought for my 2x4 grow tent which works well for this space but that is about the max space for this fan I'm cool with it

I have used this for one month and it is still a working. I will post again in another month or two about the product again

I am going to put this screen door back on a basement door so I can establish negative pressure while i prep a unfinished basement. The housing bracket gives you the option of doing multiple scenarios This is great for small window as well.