Hose Adapter
2-1/4 inch Corrugated Hose to 2-1/2 inch Smooth Duct Adapter
SKU: GD-HA-CORR-2-1-4-2-1-2
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.
Barbed hose end grips the ridges, so it stays put with no clamps.
Printed to 2-1/4" corrugated flex hose on the barbed end and 2-1/2" duct on the other.
- Made to fit your toolFriction fit, no clamps
- Made in the USAPrinted to order
- Flat $7.95 shippingOne rate, anywhere in the US
- PETG, not brittle PLABuilt for the shop
About This Adapter
Join your hose to your duct with a snug fit, so suction stays strong and less dust escapes at the joint. This hose adapter connects 2-1/4" corrugated flex hose to 2-1/2" smooth duct.
The barbed hose end grips the ridges, so it holds without clamps. The smooth duct end is a friction fit, so it pushes on snug. It is printed in PETG, so it stands up to shop heat and solvents and will not crack like brittle PLA. Every part is made to order in the USA.
What You Get
- One PETG adapter, 2-1/4" hose to 2-1/2" duct
- A barbed hose end, so it grips the ridges and stays put
- A smooth friction-fit duct end, so it pushes on snug
- A snug fit, so suction stays strong and more dust stays in the line
How it fits
- 1
Twist the barbed end into your 2-1/4" hose so the ridges grip.
- 2
Push the smooth end onto your 2-1/2" duct.
- 3
Press until the friction-fit duct end seats snug.
- 4
Run your dust collector and the joint pulls strong.
Settle the size
Two ways to land on the right number.
1. Measure it yourself
Calipers or a ruler in millimeters. That number is what the builder asks for, and we print to it.
How to measure both ends
First look at the port on your tool. Most are an opening you can put a caliper tip inside. Some are a stub that sticks out, the kind a hose slips over. The two need different numbers, so check which one you have before you measure.
If the port is an opening, measure the inside. Put your calipers in the opening and open them until they touch both walls. That inside number is the one our parts are built to, because our adapter goes into the port.
If the port is a stub the hose slips over, measure across the outside of the stub. Our adapters today are male on both ends, so they go into an opening rather than over a stub. That means a stub port may need a different part than the ones we list, so ask us before you order.
Do the same at the vacuum end. Measure the inside of the open hose or duct end. With both numbers written down, the chart and the builder both know what to show you.
2. Put your setup on the record
Give us two numbers and we build to them.
Common questions
Will it fit my hose and duct?
It connects 2-1/4" corrugated flex hose to 2-1/2" smooth duct. Both ends are printed to those two numbers.
Do I need a clamp?
Not in most setups. The barbed hose end grips the ridges and the duct end is a friction fit. A hose clamp adds extra hold if your hose is worn.
What is it made of?
PETG. It handles shop heat and common shop solvents and takes drops without cracking like brittle PLA.
Do you sell the design file?
No. We sell the finished part. Each one is made to order and ships from the US.
Find the adapter that fits your tool
Pick your tool and your vac, so more dust goes in the vac and less in the air you breathe.
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