Fan Shrouds

Fan Shrouds for Bitcoin Mining Hardware

A fan shroud is a 3D-printed adapter that connects your ASIC miner's fans to a round duct port or an external inline fan. This lets you duct hot exhaust air outside, reuse the heat for warming a room, or switch to whisper-quiet external cooling. All shrouds are printed from durable PETG and ship with mounting hardware included.

Which miner do you have?

Antminer S19 / S21 – All models with 2 x 120mm fans: S19, S19j, S19j Pro, S19k Pro, S19 XP, S21, and T21. Single shrouds, sets, and external cooling variants.

Antminer S21+ / XP / PRO – All models with 2 x 140mm fans: S21+, S21 Pro, and S21 XP. Not compatible with S19 shrouds.

Antminer S9 – Compact shrouds in 4-inch and 6-inch for the Antminer S9.

Whatsminer – Fits Whatsminer M20, M30, M50, M60, and M70.

Accessories

Ducting hoses – Aluminum flex ducts in 6, 8, and 10 inch, also available insulated. Various lengths from 3 to 10 meters.

Dust filters – Intake filters for stock fans and filters for external inline fans. Keep dust off your hashboards and extend your miner's lifespan.

Fan spoofers – Emulators that signal to your miner that the stock fans are still connected. Required for external cooling setups to prevent fan error shutdowns.

Frequently Asked Questions

What is a fan shroud for a Bitcoin miner?
A fan shroud is an adapter that bolts over your ASIC miner's fans and provides a round duct port. It lets you route hot exhaust through a hose, supply fresh air, or convert to external cooling.

Which fan shroud fits my miner?
It depends on your model. Antminer S19 and S21 (120mm fans) need different shrouds than the S21+ or S21 XP (140mm fans). Whatsminer models have their own case dimensions. Choose the matching subcategory above for your miner.

Do I need a fan spoofer?
Only if you completely remove the stock fans and switch to external cooling with an inline fan. If you keep the stock fans installed and just attach a duct hose, no spoofer is needed.

What material are the shrouds made from?
All fan shrouds are 3D-printed from PETG – a temperature-resistant, durable plastic that handles the hot exhaust temperatures of mining hardware without warping.