Bitcoin accepted at checkout | Ships from Montreal, QC, Canada | Expert support since 2016
$57.99 CAD
The S21 Pro moved to a 140 mm fan pair, which quietly made every dual-120 shroud on the market useless for it. This is the part built for that machine specifically: two 140 mm fan faces merging into one shaped plenum and out through a 6-inch collar.
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The S21 Pro moved to a 140 mm fan pair, which quietly made every dual-120 shroud on the market useless for it. This is the part built for that machine specifically: two 140 mm fan faces merging into one shaped plenum and out through a 6-inch collar.
Designed around the Antminer S21 Pro rear 140 mm fan pair. It is not for the S21 XP, which is a different arrangement, and not for the standard S21, which uses 120 mm fans — that machine takes the dual-120 shroud. Getting this wrong is the most common mistake in the S21 line, so check your model before ordering.
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.
Seat it over the rear fan pair, clamp 6-inch duct to the collar, route the heat where it needs to go. It is a large single body — nearly 300 mm across — so check the clearance behind the machine, especially in a rack.
The S21 Pro is a lot of machine, and a lot of machine in an unducted room is a room you cannot use. The whole value of a shroud on hardware at this power level is that it converts an unusable amount of waste heat into a directed, placeable output — whether that is out a wall, into a workshop, or into a heat-recovery loop that does something useful with it.
| Fits | Antminer S21 Pro — rear 140 mm fan pair. NOT the S21 XP. |
|---|---|
| Intake | 2 × 140 mm fans |
| Outlet | 6″ duct collar |
| Footprint | 296 × 170 × 157 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-S21P-D140-6 |
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.
No. The XP is not covered by this part, and we would rather tell you that than sell you something that does not fit. It is also not for the standard S21, which uses 120 mm fans and takes the dual-120 shroud.
Check the label on the chassis and the fan size. If the rear fans measure 140 mm across their mounting flange, this is your part. If they measure 120 mm, you want the dual-120 shroud.
Two 140 mm fans on a machine of this power justify 8-inch on anything but the shortest, straightest run. Take 6-inch only if the duct goes almost directly out a nearby wall.
No fit in this line is hardware-validated yet — the dimensions come from the published fan and chassis geometry, not from a measured production unit. Check your clearances before ordering, and tell us what you find. The file is open, so you can also adjust it yourself.
| Weight | 340 g |
|---|---|
| Dimensions | 29.6 × 17 × 15.7 cm |
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