About Duct Connections
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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.
PVC-coated steel combines the strength of steel with the corrosion resistance of plastic.
For technical drawings and 3-D models, click on a part number.
Straight Reducers
Reducers connect duct with different diameters.
Trade Size | Male OD | PVC-Coated Steel | |||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | End Construction | Gauge | Each | |
| 5 | 4 | 4 7/8" | 3 7/8" | Plain | 20 | 00000000 | 000000 |
| 6 | 4 | 5 7/8" | 3 7/8" | Plain | 20 | 00000000 | 00000 |
| 6 | 5 | 5 7/8" | 4 7/8" | Plain | 20 | 00000000 | 00000 |
| 7 | 6 | 6 7/8" | 5 7/8" | Plain | 20 | 00000000 | 00000 |
| 8 | 6 | 7 7/8" | 5 7/8" | Plain | 20 | 00000000 | 00000 |
| 8 | 7 | 7 7/8" | 6 7/8" | Plain | 20 | 00000000 | 00000 |
| 9 | 8 | 8 7/8" | 7 7/8" | Plain | 20 | 00000000 | 00000 |
| 10 | 8 | 9 7/8" | 7 7/8" | Plain | 20 | 00000000 | 000000 |
| 10 | 9 | 9 7/8" | 8 7/8" | Plain | 20 | 00000000 | 000000 |
| 12 | 10 | 11 7/8" | 9 7/8" | Plain | 20 | 00000000 | 000000 |
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.
Reducers
Reducers connect duct with different diameters.