Description
Overview
The universal dual-140 body with a full 8-inch outlet. Two 140 mm fans is the highest-airflow configuration in common use, and this is the version that does not throttle it at the very first fitting.
What it fits
Dimensioned to a pair of standard 140 × 140 mm fan flanges on a shared exhaust face, so it fits across hardware generations, custom builds and fan-converted machines. Standard 8-inch collar on the outlet.
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.
How it is used
The default choice for any dual-140 machine with a duct run that does more than exit the nearest wall. It is also the right pick when an 8-inch inline booster is doing part of the work, or when the machine feeds a shared trunk.
Why it helps
Two 140 mm fans working hard will happily saturate a 6-inch duct, and once the duct is the limiting element the fans are just making noise and heat to overcome your own fitting choices. Eight inches of cross-section is inexpensive insurance against having designed the restriction in yourself.
- Highest-airflow fan configuration matched to a full 8-inch outlet
- Fits by fan pattern, so it covers a wide range of hardware
- Mates directly with 8-inch inline booster fans
- Single continuous body, no assembly
Specifications
| Fits | Any pair of standard 140 mm fans on a common exhaust face |
|---|---|
| Intake | 2 × 140 mm fans |
| Outlet | 8″ duct collar |
| Footprint | 300 × 208 × 175 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-D140-8 |
Open source — print it yourself, or buy it finished
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.
Works with
- Universal Dual 140 mm to 6″ Duct Shroud
- Antminer S21 Pro Dual 140 mm to 8″ Duct Shroud
- 120 mm to 140 mm Fan Adapter
- 8″ to Dual 6″ Y-Splitter
See the full D-Central shroud and ducting system for the compatibility matrix and sizing guide.
Frequently asked questions
When would I choose the 6-inch instead?
Short, straight run, tight space, and a machine that is not thermally marginal. Otherwise take the 8-inch — the only real cost of oversizing duct is the room it takes up.
Will it fit an S21 Pro?
It should, since it references the 140 mm fan pattern, but the dedicated S21 Pro shroud wraps that chassis more closely and is the better part if you know that is your machine.
Can I use it on a machine I converted to 140 mm fans?
Yes — that is one of the cases it exists for. Pair it with our 120 to 140 mm fan adapters.


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