Antminer S7 S9 S9i E3 T9 L3+ D3 A3 V9 X3 120mm Fan Duct Cooling Shroud to 5 Inch Vent Hose

Works exactly as advertised. I was able to use the existing fan screws to mount these with no issues. It handles the constant heat of the miners perfectly and since venting all the heat outside with sound dampening soft ducting not only it is it much more quiet, but helped reduce the cost of climate controlling my farm by quite a bit.

Fits , no problems, helps with the sound

Well constructed/printed vent or intake adapter for your bitmain or other brand asic miner.I use mine to route the exhaust air using a short length of vent hose.The seller knows how to 3d print that is for sure!

It does its jobs well

L3+ approved!I used one to duct a 5 inch hose "exhaust side" out the chimney and used one on the front removing the grill to cut intake turbulence. End result same fan speed less noise and better cooling. It worked just like a velocity stack would.

Description says the item is 2.8 inches in depth. Item is actually about 1 inch less than that, a measurement I was depending on for a project, and unfortunately this item is non-returnable.

I actually use this to mount an inlet filter (AEM, as I don't need oil in my computer), as its diameter is actually 5", so it's good for filters and silicone hose (as you can't readily reduce their diameter with a clamp). It might be tough to fit heavy spiral-wire duct, as the stuff I've used is generally smaller than the advertised diameter and difficult to expand (but easy to squeeze with a clamp). (Note: most automotive filters like the AEM require about a .25" of water inlet depression, so you need either a Sanyo counter-rotating fan, an EBM DV diagonal fan, or lots of RPM.)

Product is as described but the original screws for S9 doesn’t fit with the hole so i had to do some extra work to make the hole bigger.