Broan-NuTone 512M Through-the-Wall Ventilation Fan White Cover, 6-Inch 70 CFM 6.0 Sones

I've got a lot of server equipment in a small media closet, and it was getting pretty hot in there during the summer months. This fan was easy to install through my drywall with a few small cuts with a handheld drywall saw. I was fortunate that my install location was close to a wall receptacle, so I was able to splice off of that.To provide some basic temperature control, I paired this with the BN-LINK Thermostat Controller which lets me set a threshold temp of 75F, so the fan comes on only as needed to keep things at that temperature or less. It's quiet enough though not silent. It moves more than enough air to keep a small room ventilated. My only wish is that it was reversible, it would be great to change directions depending on season.The outlet side is kind of a generic cheap white plastic grill...they could have done a better job with that. The intake side is still plastic but much nicer and more finished looking. I didn't use the bendy metal ductwork as I was just doing a straight pass-through which didn't require it, so if you're just doing a through and through, you may not need it depending on how thick your walls are.

Great fan, easy to install.

Sure this fan is a little loud, but it's not much louder than the cheap fans from Home Depot.It was an easy install and fits into a 2x4 exterior wall. Like some said, the damper is cheap but they sell metal hooded ones that will fit on the exterior.Definitely easier to install in a wall than a ceiling fan with a 90.

I did a lot of research before purchasing a fan for our small bathroom. The one we had didn't work very well, was loud as a jet turbine, and took forever to dissipate steam. I looked at all sizes, price ranges, sone levels but decided on this one based on reviews. It was relatively inexpensive and simple--the fan, a flexible round metal duct, and the outside flap/grill.At first my father (who was helping with the install) thought it wouldn't fit the stud wall space, but after cutting the metal duct considerably and taking into account the thickness of the siding, it fit just fine. All we have to do is caulk around the flap/grill outside. For us, installation was easy since we are ripping our bathroom down to the studs, so cutting the opening to be a little larger (as our old fan ducting was smaller) was really not a problem. However if we had tile on the wall already and we wanted the fan to vent the same way through the wall, it would've been a nightmare....if that were the case we may have decided to vent through the ceiling. But since the slope of our roof is so severe, we would've needed a different kind of flap for the outside. See the pics for reference (disregard the brown streak on the flaps outside-- we had a torrential downpour and our gutters overflowed.. that will wipe right off).All in all, this was a great buy. We have used it many times now and NO steam stays in the bathroom during a shower at all! Very happy!! We paid full price for this item and would highly recommend to others.

UPDATE: 2 yrs later, the outside plastic louver disintegrated (one flap fell off, others completely warped). HOWEVER, I found LOWES has a PERFECT replacement for $30 (IMPERIAL 6-in dia Galvanized Steel R2 Exhaust/Intake Dryer Vent Hood) - that is vastly more robust and was easy to use as a replacement for the Braun louver (see third photo).------------------------------------In any event, I originally installed this in a bathroom that never had a fan. I did not want to compromise the roof (no attic), so a through-the-wall was needed. Most of the installation time was taken up with figuring out how best to get the electrical feed off the existing light fixture. The actual installation of the fan went very smoothly.The fan does make a good bit of noise, but it would have to, to move 70cfm through a 6in opening - personally I do not see that as an issue.The "insect grate" is a bit coarse for my taste (a mosquito could easily get through - but certainly not a dirt-dobbers, and of course the air IS blowing out, and there are louvers that close when the fan is off). All in all, I am delighted, and now trying to figure out if I can use this same fan in my guest bathroom.

So happy I ignored other reviews of this fan being noisy... my fan is nice and quiet and looks great in my newly finished basement bathroom. The fan is very easy to install! Highly recommended.