8″ 90° Duct Elbow (Compact)

Description

Overview

A full right angle in 8-inch, kept as compact as the diameter allows. The fitting for trunk lines that have to turn hard because the building says so.

What it fits

Standard 8-inch collars on both ends, matching the rest of the 8-inch line. Flexible or rigid duct.

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

Use it where an 8-inch trunk must turn a right angle in a confined space — dropping down a wall cavity, turning behind a rack, or clearing a joist. Where there is room, two 45° elbows in series will flow better.

Why it helps

On an 8-inch trunk, a sharp 90 is the single most expensive fitting you can add. We build it because real buildings have corners, not because it is the shape we would choose. Use it deliberately, use as few as possible, and prefer 45s wherever the space exists.

• Right angle in the tightest sensible 8-inch envelope
• For wall drops, joist clearances and rack backs
• Standard 8-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

• 8″ 45° Duct Elbow
• 6″ 90° Duct Elbow (Compact)
• 8″ to 6″ Duct Reducer
• 8″ Duct Coupler

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

Frequently asked questions