About Duct Connections
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Quick-Disconnect Duct and Fittings
Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.
Galvanized steel has good corrosion resistance. 304 stainless steel is the most corrosion resistant.
For technical drawings and 3-D models, click on a part number.
Galvanized Steel | 304 Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|
| Duct Size | ID | Gauge | End Construction | Each | Each | ||
| 3 | 2 7/8" | 18 | Rolled | 00000000 | 000000 | 000000 | 00 |
| 3 | 3 1/16" | 22 | Rolled | 000000 | 00 | 00000000 | 000000 |
| 4 | 3 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 5 | 4 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 6 | 5 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 7 | 6 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 8 | 7 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 9 | 8 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 9 7/8" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 12 | 12" | 22 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 14 | 13 15/16" | 20 | Rolled | 00000000 | 00000 | 00000000 | 00000 |
| 16 | 16" | 20 | Rolled | 00000000 | 00000 | 00000000 | 000000 |
| 18 | 17 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
| 18 | 17 15/16" | 20 | Rolled | 000000 | 00 | 00000000 | 000000 |
| 20 | 19 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
| 20 | 19 15/16" | 20 | Rolled | 000000 | 00 | 00000000 | 000000 |
| 22 | 21 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
| 24 | 23 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
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.
Galvanized steel has good corrosion resistance. 304 stainless steel is more corrosion resistant than steel and aluminum.
For technical drawings and 3-D models, click on a part number.
Galvanized Steel | 304 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Male OD | Gauge | End Construction | Each | Each | ||
Female | ||||||||
| 3 | 3" | __ | 26 | Plain | 00000000 | 00000 | 0000000 | 000000 |
| 4 | 4" | __ | 26 | Plain | 00000000 | 0000 | 0000000 | 00000 |
| 5 | 5" | __ | 26 | Plain | 00000000 | 0000 | 000000 | 00 |
| 6 | 6" | __ | 26 | Plain | 00000000 | 0000 | 0000000 | 00000 |
| 7 | 7" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 8 | 8" | __ | 26 | Plain | 00000000 | 00000 | 0000000 | 00000 |
| 9 | 9" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 10 | 10" | __ | 26 | Plain | 00000000 | 00000 | 0000000 | 000000 |
| 12 | 12" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 14 | 14" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 16 | 16" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 18 | 18" | __ | 26 | Plain | 00000000 | 00000 | 000000 | 00 |
| 20 | 20" | __ | 24 | Plain | 00000000 | 00000 | 000000 | 00 |
| 22 | 22" | __ | 24 | Plain | 00000000 | 00000 | 000000 | 00 |
| 24 | 24" | __ | 24 | Plain | 00000000 | 00000 | 000000 | 00 |
Male | ||||||||
| 3 | __ | 2 7/8" | 26 | Crimped | 00000000 | 0000 | 000000 | 00 |
| 4 | __ | 3 7/8" | 26 | Crimped | 00000000 | 0000 | 000000 | 00 |
| 5 | __ | 4 7/8" | 26 | Crimped | 00000000 | 0000 | 000000 | 00 |
| 6 | __ | 5 7/8" | 26 | Crimped | 00000000 | 0000 | 000000 | 00 |
| 7 | __ | 6 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 8 | __ | 7 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 9 | __ | 8 15/16" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 10 | __ | 9 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 12 | __ | 11 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 14 | __ | 13 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 16 | __ | 15 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 18 | __ | 17 7/8" | 24 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 20 | __ | 19 7/8" | 24 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 22 | __ | 21 7/8" | 24 | Crimped | 00000000 | 00000 | 000000 | 00 |
| 24 | __ | 23 7/8" | 24 | Crimped | 00000000 | 00000 | 000000 | 00 |
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.
Galvanized steel has good corrosion resistance. 304 stainless steel is more corrosion resistant than steel.
For technical drawings and 3-D models, click on a part number.
Galvanized Steel | 304 Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Male OD | Gauge | End Construction | Each | Each | ||
Male | |||||||
| 3 | 2 7/8" | 24 | Spiral | 0000000 | 000000 | 00000000 | 000000 |
| 4 | 3 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 4 | 3 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 5 | 4 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 00000 |
| 6 | 5 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 6 | 5 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 7 | 6 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 00000 |
| 8 | 7 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 8 | 7 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 9 | 8 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 9 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 10 | 9 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 12 | 11 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 00000 |
| 14 | 13 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 000000 |
| 16 | 15 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 000000 |
| 18 | 17 7/8" | 22 | Spiral | 00000000 | 00000 | 000000 | 00 |
| 18 | 17 7/8" | 24 | Spiral | 000000 | 00 | 00000000 | 000000 |
| 20 | 19 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 000000 |
| 22 | 21 7/8" | 24 | Spiral | 00000000 | 00000 | 000000 | 00 |
| 24 | 23 7/8" | 24 | Spiral | 00000000 | 00000 | 000000 | 00 |
Sure-Seal Spiral Duct and Fittings
Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape. Fittings have male ends with a slightly smaller diameter to press-fit into duct. These duct and fittings are compatible with Crush-Resistant Spiral Duct and Fittings.
For technical drawings and 3-D models, click on a part number.
Chemical-Resistant Duct and Fittings
Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes. Use PVC pipe cement (not included) to secure components. Fittings have female ends with a slightly larger diameter to press-fit over duct.
For technical drawings and 3-D models, click on a part number.
Rectangular Duct and Fittings
Often used in tight spaces, such as in walls and ceilings, rectangular duct allows you to select larger sizes without increasing duct height. Duct and fittings have interconnecting ends that lock together with brackets.
For technical drawings and 3-D models, click on a part number.
