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.
Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance.
Aluminum | |||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Male OD | Gauge | End Construction | 2 ft. | 5 ft. | |
Open Duct | |||||||
| 3 | 3" | 2 7/8" | 26 | Crimped | 0000000 | ||
| 4 | 4" | 3 7/8" | 26 | Crimped | 000000 | ||
| 5 | 5" | 4 7/8" | 24 | Crimped | 00000000 | ||
| 5 | 5" | 4 7/8" | 26 | Crimped | 0000000 | ||
| 6 | 6" | 5 7/8" | 26 | Crimped | 00000000 | ||
| 7 | 7" | 6 7/8" | 24 | Crimped | 00000000 | ||
| 8 | 8" | 7 7/8" | 24 | Crimped | 00000000 | ||
| 8 | 8" | 7 7/8" | 26 | Crimped | 0000000 | ||
| 10 | 10" | 9 7/8" | 24 | Crimped | 00000000 | ||
| 12 | 12" | 11 7/8" | 24 | Crimped | 00000000 | ||
| 14 | 14" | 13 7/8" | 24 | Crimped | 00000000 | ||
Connectors with welded seams prevent leaks.
Aluminum | |||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Male OD | Features | End Construction | Gauge | Each | |
| 3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 0000000 |
| 5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 7 | 7" | 5 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
Connectors with welded seams prevent leaks.
Aluminum | |||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Male OD | Features | End Construction | Gauge | Each | |
| 3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 0000000 |
| 5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 7 | 7" | 6 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
| 14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
Adjustable-angle elbow connectors can be used at an angle or straight.
Quick-Disconnect Duct and Fittings
Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.
Aluminum is lightweight and has good corrosion resistance.
Blast gates stop airflow when closed.
Aluminum | |||||
|---|---|---|---|---|---|
| Duct Size | ID | End Construction | Blade Material | Each | |
| 3 | 3" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 4 | 4" | Rolled | Galvanized Steel | 0000000 | 00000 |
| 5 | 5" | Rolled | Galvanized Steel | 0000000 | 00000 |
| 6 | 6" | Rolled | Galvanized Steel | 0000000 | 00000 |
| 7 | 7" | Rolled | Galvanized Steel | 0000000 | 00000 |
| 8 | 8" | Rolled | Galvanized Steel | 00000000 | 00000 |
| 9 | 9" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 10 | 10" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 12 | 12" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 14 | 14" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 16 | 16" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 18 | 18" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 20 | 20" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 22 | 22" | Rolled | Galvanized Steel | 00000000 | 000000 |
| 24 | 24" | Rolled | Galvanized Steel | 00000000 | 000000 |
Duct Flanges
Bolt flanges to equipment to start a run of duct. They can also create secure connections between two duct ends by mounting a flange to each end and then joining the flanges.
Steel, galvanized steel, 304 stainless steel, and aluminum flanges are also known as angle rings.
Aluminum flanges have good corrosion resistance in wet environments, and weigh less than steel and stainless steel flanges.
Flange | Mounting | Alumiunum | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Overall Dp. | Ht. | Thick. | Fasteners Included | No. of Holes | Hole Dia. | Connection Type | Each | |
| 3 | 3 1/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 000000 |
| 3 1/2 | 3 9/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 00000 |
| 4 | 4 1/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 00000 |
| 4 1/2 | 4 9/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 00000 |
| 5 | 5 1/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 00000 |
| 5 1/2 | 5 9/16" | 1" | 1" | 7/64" | No | 6 | 9/32" | Press Fit | 0000000 | 00000 |
| 6 | 6 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 7 | 7 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 8 | 8 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 9 | 9 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 10 | 10 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 11 | 11 1/8" | 1 1/4" | 1 1/4" | 1/8" | No | 6 | 3/8" | Press Fit | 0000000 | 00000 |
| 12 | 12 1/8" | 1 1/2" | 1 1/2" | 1/8" | No | 8 | 7/16" | Press Fit | 0000000 | 00000 |
| 13 | 13 1/8" | 1 1/2" | 1 1/2" | 1/8" | No | 8 | 7/16" | Press Fit | 0000000 | 00000 |
| 14 | 14 1/8" | 1 1/2" | 1 1/2" | 1/8" | No | 8 | 7/16" | Press Fit | 0000000 | 00000 |
| 16 | 16 1/8" | 1 1/2" | 1 1/2" | 3/16" | No | 8 | 7/16" | Press Fit | 0000000 | 00000 |
| 18 | 18 1/8" | 1 1/2" | 1 1/2" | 3/16" | No | 8 | 7/16" | Press Fit | 0000000 | 00000 |
| 20 | 20 1/8" | 1 1/2" | 1 1/2" | 3/16" | No | 12 | 7/16" | Press Fit | 0000000 | 00000 |
| 24 | 24 1/8" | 1 1/2" | 1 1/2" | 3/16" | No | 12 | 7/16" | Press Fit | 0000000 | 000000 |
| 26 | 26 1/8" | 2" | 2" | 3/16" | No | 16 | 7/16" | Press Fit | 0000000 | 000000 |
Gas Chimney Vents and Fittings
For use with gas-fired equipment, such as boilers and furnaces, these vent pipes and fittings withstand temperatures up to 400° F. Also known as type B gas vents.
To join pipes and connectors, insert a male end into a female end and secure with the included locking band.
Duct Hose Connectors
Slide these connectors into the ends of duct hose and secure with a clamp.
Aluminum is lightweight.
| For Hose ID | Lg. | Shape | Temperature Range, ° F | Material Thick. | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Aluminum  | ||||||
| 1" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 000000 |
| 1 1/4" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 1 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 1 3/4" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 2 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 3" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 3 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 4" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 4 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 5" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 5 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 6" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 6 1/2" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 7" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 8" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 9" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 10" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 12" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 14" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 16" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 18" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
| 20" | 4" | Straight | -100° to 400° | 0.04" | 0000000 | 00000 |
Material Handling Chutes
Let gravity move your material from one area to another by connecting these chutes to conveyors and other machinery. Originally designed for cement trucks, the extruded aluminum construction makes chutes both strong and lightweight. Chutes can be cut to shorter lengths.
Flared chutes have a wide opening to prevent material from jamming.