Universal Dual 140 mm to 6″ Duct Shroud

Description

Universal dual 140 mm fan to 6-inch duct shroud

This dual 140 mm fan to 6-inch duct shroud is dimensioned to the fan flanges rather than to any one chassis. Two standard 140 × 140 mm fans on a shared exhaust face, one shaped plenum, one 6-inch collar — and no assumption about what the metal behind them says on the label.

That is a deliberate trade. A model-specific shroud hugs one machine and nothing else; this one reaches across a much wider range of hardware, which is exactly what you need for a rebuild, a bench rig, a machine that came back from a shop with different fans on it, or a model that will never get a shroud of its own.

Drawn in-house, produced as one continuous PETG body with nothing to bolt together.

What it fits: any dual 140 mm exhaust face

Built for a pair of standard 140 × 140 mm fan flanges sitting side by side on a common exhaust face, exiting through a 6-inch duct collar. It carries across hardware generations because it references the fans, not the chassis.

Where a dedicated body exists, take the dedicated body — the Antminer S21 Pro Dual 140 mm to 6″ Duct Shroud wraps that machine more closely, and single-fan Whatsminer layouts are served by the Whatsminer 140 mm Fan to 6″ Duct Shroud. Metric duct owners want the 150 mm or 160 mm collar versions of this same body.

How it installs

1. Sit the shroud over both 140 mm fan frames so they land inside the plenum mouth.
2. Clamp 6-inch flex or rigid duct to the collar and tighten the worm clamp.
3. Check the 300 mm span clears whatever is behind the machine.
4. On a converted machine, fit the fan adapters first, then the shroud over them.

Why a fan-referenced body is the right tool here

A shroud that keys off a chassis has to be re-drawn for every chassis. A shroud that keys off the fan pattern inherits a standard that has not changed in twenty years: 140 mm frames, a fixed screw square, predictable spacing. That is why one body can serve a second-hand miner, a home-built rig and a fan-swapped unit without three separate designs.

Inside, the two fan columns are brought together in a shared plenum before the section rounds down to 152.4 mm at the 6-inch collar. The curve is continuous from face to collar — the air is turned, not stopped and restarted at a flat wall.

• Keys to the 140 mm fan pattern, so one part covers a long tail of hardware
• Serves rebuilds, custom rigs and machines converted to 140 mm fans
• Merges both fan columns into one plenum ahead of the 6-inch collar
• Holds its shape in exhaust heat, where PLA parts sag off the face
• Ships as one continuous body, ready to clamp duct onto
• Shares the 6-inch collar standard with every fitting in the line

Specifications

Open source: our design, freely given

D-Central designs the whole shroud line in-house and publishes the files under CC BY-SA 4.0 at the 3D models download center. The universal bodies in particular are meant to be modified — stretch the fan spacing, change the collar, adapt it to whatever oddity is on your bench, then sell what you make if you want to. That freedom is the point of releasing them.

Start from ours rather than from nothing: this model’s card links the ZIP, with the STL, the CC BY-SA 4.0 licence and the installation and safety guide inside. D-Central Technologies drew every line of it.

This page sells the finished part, made to order in black or orange PETG and shipped from Montreal, Quebec, for people who would rather spend the evening on the miner than on the model. Buying it, or backing D-Central’s fund page, is what keeps the free files coming.

Works with

• Universal Dual 140 mm to 8″ Duct Shroud
• 120 mm to 140 mm Fan Adapter
• 140 mm Intake Filter Ring
• 6″ 90° Duct Elbow (Compact)
• 6-Inch Flex Duct Window Vent Port

Sizing guide and compatibility matrix live on the D-Central shroud and ducting system page.

Frequently asked questions