6″ to Dual 4″ Y-Splitter

Description

Overview

One 6-inch trunk, two 4-inch branches, joined by a shaped wye rather than a tee. Run it forwards to split a single exhaust into two destinations, or backwards to collect two small lines — a miner and its PSU, most commonly — into one run.

What it fits

Standard 6-inch collar on the trunk, two standard 4-inch collars on the branches. The 4-inch size matches our PSU exhaust shroud and the small end of the 6″ to 4″ reducer.

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

The most common layout is as a collector: the miner exhaust on one 4-inch branch, the PSU exhaust on the other, and a single 6-inch trunk carrying both out of the building. Used forwards, it splits one exhaust between two rooms, or between a room and an outside vent so you can choose where the heat goes.

Why it helps

A wye merges two streams at a shallow angle so they join the trunk moving in roughly the same direction. A tee slams them into each other at a right angle, which costs pressure and makes noise. If you are going to combine two air paths at all, the shape you do it with matters — and doing it properly is what lets one duct run serve a machine and its power supply instead of needing two holes in the wall.

• Shaped wye, not a tee — streams merge at a shallow angle
• Works forwards as a splitter or backwards as a collector
• 4-inch branches match the PSU shroud and 4-inch fittings
• Single continuous body, no assembly

Specifications

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

• 8″ to Dual 6″ Y-Splitter
• APW PSU Exhaust to 4″ Duct Shroud
• 6″ to 4″ Duct Reducer
• Print-in-Place Duct Blast Gate / Damper

See the full D-Central shroud and ducting system for the compatibility matrix and sizing guide.

Frequently asked questions