Coolerguys 120mm or 92mm Fan to 4" Ducting Shroud Funnel with Clamp for Greenhouses, Enclosures, Crypto Mining, and More

Got a120mm case fan and holes line up perfect on this 4-inch shroud/flange, so I would assume the same for the 92mm. It will be used for my small grow tent with 4-inch port for extra ventilation if needed. Glad I found this. Beats me trying to make something myself and nowhere near as easy to use.

As advertised; Used this to attach a computer fan to my indoor Mycology farm area for fresh air exchange - Worked great! I used a 140mm fan.

I've used these several places in my closet and on my miner.- They are of great quality. The plastic is not flimsy and works well to bolt to the wall vent.- They have just the right size for standard computer fans and HVAC ducts to work together so it is perfect for DIY vents.- They come with a tie down to easily attach HVAC or other hoses.

Worked great for my 92mm RV closet fan vent to redirect air and prevent condensation on outer wall.

My only complaint is that it's a harder, more brittle plastic than you'd typically see PC case fans made of. The reason this matters is you have to drive those massive self-threading PC case fan screws through the holes, and I'd be less worried about this process causing hairline cracks if it was a softer plastic like I'm used to.

Works as it should for 129mm square fan. Ho;es for a 92mm fan are pre-drill which leave 4 small hoes outside the duct when using for a 120mm fan. These holes holes should be of the knock=out type.

Product exactly what i aas looking fir and was happy to see that this plastic is not brittle and does not brake right away

Used this to house a 120mm exhaust fan for a 3D printing enclosure fume extractor, the fan fit perfectly and the connections are durable. Fit the ducting I had perfectly as well.