Bitcoin accepted at checkout | Ships from Montreal, QC, Canada | Expert support since 2016
$19.99 CAD
The part almost everyone forgets. You duct the miner, you are pleased with yourself, and then you notice the power supply is still quietly pumping a few hundred watts of heat into the room from a corner you never thought about. This shroud captures the PSU exhaust and hands it to a 4-inch duct.
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The part almost everyone forgets. You duct the miner, you are pleased with yourself, and then you notice the power supply is still quietly pumping a few hundred watts of heat into the room from a corner you never thought about. This shroud captures the PSU exhaust and hands it to a 4-inch duct.
Built around the Bitmain APW-series exhaust face — APW3, APW7, APW9 and the other server-style bricks that share that form factor. Output is a 4-inch collar, which is the right size for the airflow a PSU actually moves. Note that APW3 through APW9+ run on 120 V; APW12 and APW17 are 200–240 V only.
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.
Fit it over the PSU exhaust end, clamp 4-inch duct to the collar, and either run it to its own outlet or merge it into your main exhaust with a 6″ to dual 4″ Y-splitter used in reverse as a collector. This is the second half of a properly ducted single-machine install.
PSU heat is not trivial — a hot-running brick is a meaningful fraction of your total room load, and it is usually sitting somewhere with worse airflow than the miner itself. Ducting it does two things at once: it gets the heat out, and it keeps the PSU running in cooler intake air, which is the single most useful thing you can do for a power supply’s service life.
| Fits | Bitmain APW-series PSU exhaust (APW3, APW7, APW9 and similar server-style bricks) |
|---|---|
| Intake | PSU exhaust face |
| Outlet | 4″ duct collar |
| Footprint | 155 × 106 × 125 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-PSU-4 |
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.
It is built around the Bitmain APW-series exhaust face — APW3, APW7, APW9 and dimensionally similar server-style bricks. It is not designed for APW12/APW17 or for ATX-style supplies. Measure before you order; PSU fit is not yet hardware-validated across every revision.
Because a PSU fan moves far less air than a miner fan. A 4-inch duct is correctly matched to that flow, and it is much easier to route a 4-inch line alongside an existing 6- or 8-inch trunk than to find room for a second big duct.
Yes — that is the usual layout. Run 4-inch from the PSU into a Y-splitter used as a collector, and join it to the miner’s 6-inch line. Just make sure the combined run is not so restricted that you are pushing back against either fan.
| Weight | 130 g |
|---|---|
| Dimensions | 15.5 × 10.6 × 12.5 cm |
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Last reviewed July 31, 2026.
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