Description
Overview
The 140 mm version of the intake filter ring — the size Whatsminer M-series hardware and most large-fan builds actually need, and one that is annoyingly hard to buy off the shelf.
What it fits
Fits the standard 140 mm fan face on the intake side. Takes flat filter media cut to size from any sheet stock; no cartridge to buy and nothing proprietary about the consumable.
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
Mount on the intake fans and set a cleaning schedule based on your environment. On a Whatsminer running in a garage or a shop, expect to be pulling media out and shaking it off more often than you would guess — which is exactly the point, because that dust would otherwise be inside the machine.
Why it helps
Big machines pull a lot of air, and everything in that air ends up on the hashboards. A filtered intake keeps the fins clean, keeps the chips cooler at the same fan speed, and turns an annual teardown-and-blowout into a two-minute job at the front of the unit. For anyone running hardware in a dusty environment, this is the highest-value cheap part in the catalogue.
- 140 mm size, which is hard to find off the shelf
- Takes any flat filter media cut from sheet stock
- Keeps dust out of hashboard fins where it does real damage
- Single continuous body, no assembly
Specifications
| Fits | Any standard 140 mm fan |
|---|---|
| Intake | 140 mm fan face |
| Outlet | Filtered intake |
| Footprint | 158 × 158 × 28 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-ACC-FILT-140 |
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
- 120 mm Intake Filter Ring
- Whatsminer 140 mm Fan to 6″ Duct Shroud
- Whatsminer 140 mm Fan to 8″ Duct Shroud
- 140 mm to 120 mm Fan Adapter
See the full D-Central shroud and ducting system for the compatibility matrix and sizing guide.
Frequently asked questions
How often should I clean it?
It depends entirely on your environment, and the honest answer is that you will find out in the first month. Shop or garage: expect frequently. Finished basement: much less. Set an interval based on what you see, not on a number someone made up.
Will it restrict my Whatsminer?
A clean filter costs a little airflow; a clogged one costs a lot. Watch your temperatures after fitting it. If the machine is already thermally marginal, deal with that first — a filter is not free.
Does it fit the 140 mm fans on M30S / M50S / M60S?
It is built to the standard 140 mm fan face those machines use. Fit has not been hardware-validated on every model, so check your clearance at the intake end before ordering.

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