The intake shroud for your Antminer S21+, S21 Pro or S21 XP. Mounts over the intake side of your miner. For duct connection with stock fans or as an adapter for an external inline fan.
At a Glance
Contents: 1× intake shroud, 2× PSU-Adapter, 2× screw set (8 short and 8 long screws), 1× hose clamp
Size options: 8 inch (200mm) or 10 inch (250mm)
Use case 1: With stock fans – connect duct hose, supply fresh air
Use case 2: Without fans – plug inline fan directly into the opening
With Stock Fans
The fans stay in the miner. The shroud mounts over the fan and supplies fresh air via duct hose. Ideal when you want to draw intake air from outside or another room.
With Inline Fan
The stock fans are removed. A quiet inline fan plugs directly into the shroud opening. Significantly less noise with equal or better cooling performance. Fan spoofer only needed with stock firmware (Bitmain OS) – not required with Braiins OS or other alternative firmware.
8 or 10 Inch?
10 inch offers less air resistance and is generally the quieter option: Whether stock fans or inline fan – the fans have less backpressure to work against and run quieter as a result. Ideal for longer duct runs or bends. 8 inch is sufficient for short, straight runs and is more compact.
Compatible Miners
Fits all Antminer models with 2× 140mm fans: S21+, S21 Pro, S21 XP, S23.
Not compatible with S19 series and base S21 (120mm fans) – for those, check our S19/S21 intake shroud.
Material and Quality
Made from PETG – heat-resistant, durable, and printed as solid material. Designed and manufactured in Germany.
Product safety information
Manufacturer information:
Shortfiat UG (haftungsbeschränkt)
Blankenauer Str. 61
Chemnitz, Deutschland, 09113
gpsr@shortfiat.de