Bitcoin accepted at checkout | Ships from Montreal, QC, Canada | Expert support since 2016
$35.99 CAD
Adapts a dual 120 mm miner exhaust — Antminer S19 series, standard S21 and similar — to 150 mm European metric flex duct. Single-piece PETG, made to order in Montreal, Quebec.
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If your ducting is metric — 150 mm European flex duct — a 6-inch collar will not fit it: 6 inches is 152.4 mm, not 150. This shroud takes the same dual 120 mm exhaust capture as our inch-collar shrouds and gives it a collar cut for 150 mm metric duct from the start.
It captures both 120 mm exhaust fans of an S19-class or standard S21-class machine — any miner with two touching 120 mm fans on a 120.0 mm pitch — and converges them into one 150 mm duct. Single-piece PETG, flex-over collar: the duct slips over and clamps on the 148.0 mm sealing land.
Any miner with two touching 120 mm exhaust fans on a 120.0 mm pitch — the Antminer S19 series and standard S21 are the obvious candidates — exhausting into 150 mm metric flex duct.
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 clearances against the footprint below. If something does not fit, tell us — that is how the next revision gets better.
One more honest number: the collar’s sealing land sits at duct nominal minus 2.0 mm, while measured male metric hardware runs nominal minus 1 to minus 2 mm. Our land sits at or under that hardware and never over — which is a retention argument, not an exact-match claim. The metric ring coupon measurement that would settle it is still open.
A note on corroboration: the 150 mm sizing rests on manufacturer datasheet evidence only, so it has weaker backing than the 160 mm and 200 mm sizes in this line. Do not treat it as verified against physical spigots — it is not, yet.
Mount the shroud over the two 120 mm exhaust fans using the fan screw pattern. The flange holes are 5.0 mm (with 5.424 mm slots); put a 9 mm or larger flat washer under each screw head, or reuse the miner’s own large-head fan screws. Then slip 150 mm metric flex duct over the collar, clamp it on the sealing land behind the crest, and route the duct to a window port, a plenum, or the space you want to heat.
| Fits | Any miner with two touching 120 mm exhaust fans at 120.0 mm pitch (Antminer S19 series, standard S21, similar) |
|---|---|
| Intake | Two 120 mm fans at 120.0 mm pitch; 116.0 mm bore per fan, 2.0 mm sealing land per side |
| Duct size | 150 mm metric flex duct — flex-over collar, crest 150.0 mm, sealing land 148.0 mm |
| Footprint (mm) | 250.0 × 150.0 × 165.0 |
| Material | PETG, single-piece print |
| Fulfilment | Made to order in Montreal, Quebec |
This design is open source under CC BY-SA 4.0. The files are free at /3d-models/, and anyone may print, modify or sell them. Buying the finished part supports the work that produces these designs — you can also support it directly via the fund.
See the full D-Central shroud and ducting system.
Because inch fittings do not fit metric duct — a 6-inch collar is 152.4 mm, not 150 mm, and the mismatch only gets worse at larger sizes. This collar is cut for metric flex duct from the start: crest at duct nominal, sealing land 2.0 mm under it, so the duct slips over the collar and clamps on the land.
It is the least-corroborated size in the metric line: it rests on manufacturer datasheet evidence only, with no physically measured 150-class spigot behind it yet. The 160 mm and 200 mm sizes have stronger backing. Measure your duct before ordering.
No. None of the interface dimensions in this line have been caliper-verified against production hardware yet. The geometry comes from published fan and chassis data — measure your machine and your duct before ordering, and tell us if anything is off.
| Weight | 250 g |
|---|---|
| Dimensions | 25 × 15 × 16.5 cm |
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