6″ 45° Duct Elbow

Description

Overview

A gentle 45-degree turn in 6-inch duct. Two of these make a 90-degree turn that costs meaningfully less pressure than a single sharp 90, which is the sort of trade that decides whether a long duct run works or disappoints.

What it fits

Standard 6-inch collars on both ends, matching every other 6-inch fitting in the line. Flexible or rigid duct both work.

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 wherever the run has to change direction. Where you need a full right angle and have the room, two 45s separated by a short straight section is the better-flowing option than one 90. Where you do not have the room, we make a compact 90 for exactly that case.

Why it helps

Bends are where duct runs lose their pressure budget. The loss goes up sharply as the turn gets tighter, so splitting a right angle into two gentler turns is one of the cheapest improvements available in an exhaust system. It costs one extra fitting and a few centimetres of space, and it buys back airflow you already paid for at the wall socket.

• Gentle 45° turn — substantially lower loss than a sharp 90
• Two in series make a better-flowing right angle than one 90
• 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

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

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

Frequently asked questions