About Duct Connections
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Standard Duct and Fittings

No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.
304 stainless steel is more corrosion resistant than steel and aluminum.
For technical drawings and 3-D models, click on a part number.
Quick-Disconnect Duct and Fittings

Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.
304 stainless steel is the most corrosion resistant.
For technical drawings and 3-D models, click on a part number.

Airflow dampers regulate airflow.
304 Stainless Steel | ||||||
---|---|---|---|---|---|---|
Duct Size | ID | Gauge | End Construction | Blade Material | Each | |
4 | 3 15/16" | 22 | Rolled | 304 Stainless Steel | 00000000 | 0000000 |
5 | 4 15/16" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
6 | 6" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
7 | 7" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
8 | 8" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
9 | 9" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
10 | 10" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
12 | 12 1/8" | 20 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
14 | 14 1/8" | 20 | Rolled | __ | 00000000 | 000000 |
16 | 16 1/8" | 20 | Rolled | __ | 00000000 | 000000 |

304 Stainless Steel | |||||
---|---|---|---|---|---|
Duct Size | ID | Gauge | End Construction | Each | |
3 | 3 1/16" | 22 | Rolled | 00000000 | 000000 |
4 | 3 7/8" | 22 | Rolled | 00000000 | 00000 |
5 | 4 7/8" | 22 | Rolled | 00000000 | 00000 |
6 | 5 7/8" | 22 | Rolled | 00000000 | 00000 |
7 | 6 7/8" | 22 | Rolled | 00000000 | 00000 |
8 | 7 7/8" | 22 | Rolled | 00000000 | 00000 |
9 | 8 7/8" | 22 | Rolled | 00000000 | 00000 |
10 | 9 7/8" | 22 | Rolled | 00000000 | 00000 |
12 | 12" | 22 | Rolled | 00000000 | 00000 |
14 | 13 15/16" | 20 | Rolled | 00000000 | 00000 |
16 | 16" | 20 | Rolled | 00000000 | 000000 |
18 | 17 15/16" | 20 | Rolled | 00000000 | 000000 |
20 | 19 15/16" | 20 | Rolled | 00000000 | 000000 |
Crush-Resistant Spiral Duct and Fittings

A spiral seam makes this duct strong and rigid. Fittings have male ends with a slightly smaller diameter to press-fit into duct.
304 stainless steel is more corrosion resistant than steel.
For technical drawings and 3-D models, click on a part number.

304 Stainless Steel | |||||
---|---|---|---|---|---|
Duct Size | Male OD | Gauge | End Construction | Each | |
Male | |||||
3 | 2 7/8" | 24 | Spiral | 00000000 | 000000 |
4 | 3 7/8" | 24 | Plain | 0000000 | 00000 |
5 | 4 7/8" | 24 | Spiral | 00000000 | 00000 |
6 | 5 7/8" | 24 | Plain | 0000000 | 00000 |
7 | 6 7/8" | 24 | Spiral | 00000000 | 00000 |
8 | 7 7/8" | 24 | Plain | 0000000 | 00000 |
9 | 8 7/8" | 24 | Spiral | 00000000 | 00000 |
10 | 9 7/8" | 24 | Plain | 0000000 | 00000 |
12 | 11 7/8" | 24 | Spiral | 00000000 | 00000 |
14 | 13 7/8" | 24 | Spiral | 00000000 | 000000 |
16 | 15 7/8" | 24 | Spiral | 00000000 | 000000 |
18 | 17 7/8" | 24 | Spiral | 00000000 | 000000 |
20 | 19 7/8" | 24 | Spiral | 00000000 | 000000 |
High-Temperature Chimney Vents and Fittings
Built to withstand temperatures up to 1000° F, these vent pipes and fittings are for use with boilers, furnaces, stoves, and other equipment that is fired by gas, oil, wood, or coal.
To join pipes and connectors, twist a male end into a female end and secure with the included locking band.