Use two fingers to spin the part.
Straight Adapter
6 in to 4 in Straight Adapter
- 1.25 in$20.99
- 1.5 in$20.99
- 1.875 in$20.99
- 2 in$20.99
- 2.5 in$20.99
- 3 in$20.99
- 4 in$20.99
- 6 in$25.99 (this size)
- 1.25 in$23.99
- 1.5 in$24.99
- 1.875 in$24.99
- 2 in$24.99
- 2.5 in$25.99
- 3 in$25.99
- 4 in$25.99 (this size)
- 6 in$25.99
Ships in 3 to 5 business days.
3D printed in PETG and made to order. Shipping is a flat $7.95 anywhere in the US.
Printed to standard 6 in (152.4 mm) and 4 in (101.6 mm) duct sizes. It pushes on and holds in most setups.
- Standard sizesStandard size shown
- Made in the USAPrinted to order
- Flat $7.95 shippingOne rate, anywhere in the US
- PETG, not brittle PLABuilt for the shop
About this Straight Adapter
A straight fitting joins two duct or hose ends in line. Set both ends the same and it is a coupler that joins two pipes. Set them different and it is a reducer that steps one size up or down.
The inside walls are smooth, so the air keeps moving and you lose less pull at the joint. Each end is printed to the standard size you pick, so it pushes on and holds in most setups.
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Printed to order in PETG, made in the USA. Why we use PETG.
Size help
Measure your hose or duct first, in inches or millimeters. Our measuring guide shows how.
Other sizes
- 1.25 x 1.25 in
- 1.5 x 1.25 in
- 1.5 x 1.5 in
- 1.875 x 1.25 in
- 1.875 x 1.5 in
- 1.875 x 1.875 in
- 2 x 1.25 in
- 2 x 1.5 in
- 2 x 1.875 in
- 2 x 2 in
- 2 x 4 in
- 2 x 6 in
- 2.5 x 1.25 in
- 2.5 x 1.5 in
- 2.5 x 1.875 in
- 2.5 x 2 in
- 2.5 x 2.5 in
- 2.5 x 4 in
- 2.5 x 6 in
- 3 x 1.25 in
- 3 x 1.5 in
- 3 x 1.875 in
- 3 x 2 in
- 3 x 2.5 in
- 3 x 3 in
- 3 x 4 in
- 3 x 6 in
- 4 x 1.25 in
- 4 x 1.5 in
- 4 x 1.875 in
- 4 x 2 in
- 4 x 2.5 in
- 4 x 3 in
- 4 x 4 in
- 4 x 6 in
- 6 x 1.5 in
- 6 x 1.875 in
- 6 x 2 in
- 6 x 2.5 in
- 6 x 3 in
- 6 x 6 in
