Bitcoin accepted at checkout | Ships from Montreal, QC, Canada | Expert support since 2016
$24.99 CAD
Same single 120 mm fan intake as the 6-inch version, opened up to an 8-inch collar. The wider outlet is not about the fan — a single 120 mm fan does not need 8 inches of duct on its own. It is about what comes after: long runs, multiple bends, an 8-inch inline booster, or a shared trunk that othe…
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Same single 120 mm fan intake as the 6-inch version, opened up to an 8-inch collar. The wider outlet is not about the fan — a single 120 mm fan does not need 8 inches of duct on its own. It is about what comes after: long runs, multiple bends, an 8-inch inline booster, or a shared trunk that other machines feed into.
Intake matches the standard 120 × 120 mm fan flange. The collar is sized for 8-inch flexible or rigid duct, matching AC Infinity Cloudline S8/T8-class inline fans and standard 8-inch ducting hardware.
Measure before you order. Fit dimensions in this line are derived from published fan and chassis geometry and are not yet validated against measured production hardware. Check your flange size and the clearance around your machine against the footprint in the specifications below. If something does not fit, tell us — that is how the next revision gets better.
Use it when the duct downstream is already 8-inch and you do not want a reducer in the path, or when you are building a trunk line that several machines share. It also earns its keep on runs with real length or several 90-degree turns, where the larger cross-section keeps the pressure the fan has to fight against down.
Every reducer, elbow and metre of flex duct costs you static pressure, and a 120 mm fan does not have much to spare. Starting the run at 8 inches means you are not throwing away pressure at the very first fitting, which matters more the longer and more convoluted the duct path gets.
| Fits | Any standard 120 × 120 mm fan flange |
|---|---|
| Intake | 1 × 120 mm fan |
| Outlet | 8″ duct collar |
| Footprint | 208 × 208 × 115 mm |
| Material | PETG |
| Construction | Single continuous body — no assembly, no fasteners, no glued joints |
| Design files | Open source — free to download, use, modify and redistribute |
| SKU | DC-SHR-120-8 |
Every shroud D-Central designs is released as an open file. The geometry for this part is free to download from our 3D models download center: use it, modify it, remix it, run it in your own shop, sell what you make from it. There is no licence to buy and no design gated behind a purchase. Shared knowledge is the whole reason this industry has open hardware at all, and we are not going to be the ones who stop passing it on.
This listing is for the finished part: made to order in PETG and shipped from Montreal, Quebec. If you would rather have it in your hands than spend an evening making one, buy it here — that is what pays for the next design in the line. You can also support the open-source work directly through D-Central’s fund page.
See the full D-Central shroud and ducting system for the compatibility matrix and sizing guide.
On a short, straight run, yes — the 6-inch version is the sensible pick. 8-inch earns its place when the duct is long, has several bends, feeds an 8-inch inline fan, or joins a shared trunk. It costs you nothing in airflow to be generous with duct diameter; it only costs you space.
Yes, and that is a common layout: leave the shroud at 8-inch, run the trunk, then step down at the window or wall penetration with our 8″ to 6″ reducer. Reducing late is better than reducing early.
It is built to the standard 120 mm flange, so it fits the great majority of 120 mm fans. Fit has not yet been hardware-validated against every chassis in the field — measure your flange and your clearance before ordering, and tell us if something is off.
| Weight | 200 g |
|---|---|
| Dimensions | 20.8 × 20.8 × 11.5 cm |
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Last reviewed July 31, 2026.
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