Antminer S7 S9 S9i E3 T9 L3 D3 A3 V9 X3 120mm Fan Duct Cooling Shroud

Fits perfectly to 4" duct, holes line up. Can't ask for more!

Correct dimensions (as advertised) made a good fit for a coooling duct (seperate purchace) to bolt to exhaust hot air vent port of my PC and attach with a jubilie clip, stopping the heat being sucked back into the case in an enclosed area.

I built a portable enclosure for a laser etcher. So I actually got two of these. One for the vent out of the enclosure, and a second one so that I could vent out of a window (and seal off the window opening to keep the fumes from sneaking back in). These were perfect for both sides of that. Now I just hook up an 8' vent tubing for a dryer on both ends, and I am fume-free while using it inside.These are solid and fit perfectly on 4" holes I have cut on plywood on both pieces. I would definitely buy them again for this purpose.

This worked perfectly to attach a square computer fan to a 4” exhaust duct for a composting toilet. I’ve been trying to figure out a way to get the fan mounted properly without having to chop off the corners of the fan or use a bunch of duct tape, this was the perfect solution. Thank you!!

I basically built a system to pump cold air directly into the front of my very hot computer. Long story short, i had to fabricate something and this was the magic piece to solve the problem.