Bitcoin accepted at checkout | Ships from Montreal, QC, Canada | Expert support since 2016
$35.99 CAD
Wide-base version of our dual 120 mm to 160 mm metric duct shroud: a broader 260 mm mounting base with the same 160 mm collar. Single-piece PETG, made to order in Montreal, Quebec.
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The wide-base variant of our dual 120 mm to 160 mm metric shroud, sized for 160 mm European or Avalon Q class flex duct. The difference from the standard version is the mounting base: 260 mm across instead of 250 mm, giving the flange more real estate across the fan face. The duct end is identical — the same 160 mm flex-over collar.
Everything else carries over: it captures both 120 mm exhaust fans of any miner with two touching 120 mm fans on a 120.0 mm pitch — Antminer S19 series and standard S21 included — as a single-piece PETG part, with the duct clamping on the 158.0 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 160 mm metric flex duct. Choose this version over the standard one when you want the broader 260 mm mounting base.
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.
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 160 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 | 160 mm metric flex duct — flex-over collar, crest 160.0 mm, sealing land 158.0 mm |
| Footprint (mm) | 260.0 × 160.0 × 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.
The mounting base is 10 mm broader — 260 mm across instead of 250 mm — while the 160 mm duct collar is the same. If you do not specifically want the wider base, the standard version does the same job.
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.
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 | 260 g |
|---|---|
| Dimensions | 26 × 16 × 16.5 cm |
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