Connection Type Connection Type |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Duct Connections
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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 connect duct with different diameters.
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.

Male straight connectors are required to connect two pieces of duct.

Reducers connect duct with different diameters.
Duct 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 |
Straight-Run Fabric Duct
Evenly distribute air from fans and blowers throughout large spaces.
Duct is durable, flame-retardant polyethylene plastic with evenly spaced air holes. Use the sewn-in snap hooks to hang it from beams or cable.


25 ft. Lg. | 50 ft. Lg. | ||||||||
---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Recommended Airflow, cfm | Color | Max. Temp., °F | Connection Type | Each | Each | ||
12 | 12 1/2" | 1,000-1,500 | White | 180° | Worm-Drive Clamp | 0000000 | 0000000 | 0000000 | 0000000 |
15 | 15 1/2" | 1,500-2,500 | White | 180° | Worm-Drive Clamp | 0000000 | 000000 | 0000000 | 000000 |
18 | 18 1/2" | 2,500-3,500 | White | 180° | Worm-Drive Clamp | 0000000 | 000000 | 0000000 | 000000 |
24 | 24 1/2" | 3,500-5,000 | White | 180° | Worm-Drive Clamp | 0000000 | 000000 | 0000000 | 000000 |
30 | 30 1/2" | 6,500-8,000 | White | 180° | Worm-Drive Clamp | 0000000 | 000000 | 0000000 | 000000 |