6″ 90° Duct Elbow (Compact)

Description

Overview

A right angle in the smallest envelope we could give it. This is the space-constrained option: for when the duct has to turn hard against a wall, behind a rack, or under a shelf, and there is simply no room for the gentler alternatives.

What it fits

Standard 6-inch collars on both ends. Compatible with every other 6-inch fitting, shroud and silencer in the line.

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

Fit it where the run must turn a full right angle inside a tight envelope — immediately behind a machine in a rack, at a wall where the duct has to drop straight down, or anywhere a pair of 45s simply will not fit.

Why it helps

The honest framing: a compact 90 is a compromise. It costs more pressure than two 45s and more than a wide-radius 90, and we are telling you that rather than pretending otherwise. What it buys is a right angle that physically fits where nothing else does — and a fitting that fits beats an efficient one that does not. If you have room to breathe, take the airflow variant or two 45s instead.

• Full right angle in a deliberately minimal envelope
• For rack backs, wall drops and other genuinely tight turns
• Standard 6-inch collars on both ends
• 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

• 6″ 90° Duct Elbow — Airflow Variant (R/D 0.94)
• 6″ 45° Duct Elbow
• 8″ 90° Duct Elbow (Compact)
• 6″ Duct Coupler

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

Frequently asked questions