About Duct Connections
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Standard Duct and Fittings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/h01/h01a-duct-connection-gil1548180352@halfx_635503701690000000.png?ver=imagenotfound)
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. Aluminum is more lightweight than steel and stainless steel and 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.
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Galvanized Steel | Aluminum | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Includes | End Construction | Gauge | Each | Gauge | Each | ||
Exhaust Vent | ||||||||||
3 | 3" | __ | Damper | Plain | __ | 000000 | 00 | 24 | 0000000 | 000000 |
4 | 4" | __ | Damper | Plain | 30 | 00000000 | 000000 | 24 | 0000000 | 00000 |
5 | 5" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | 6" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 00000 |
7 | 7" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | 8" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 000000 |
Intake Vent | ||||||||||
4 | __ | 3 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
5 | __ | 4 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | __ | 5 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
7 | __ | 6 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | __ | 7 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
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Galvanized Steel | 304 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | End Construction | Gauge | Each | Gauge | Each | ||
3 | 3" | Plain | 26 | 0000000 | 000000 | __ | 000000 | 00 |
4 | 4" | Plain | 26 | 0000000 | 00000 | 26 | 0000000 | 000000 |
5 | 5" | Plain | 26 | 0000000 | 00000 | __ | 000000 | 00 |
6 | 6" | Plain | 30 | 0000000 | 00000 | 26 | 0000000 | 00000 |
7 | 7" | Plain | 30 | 0000000 | 00000 | __ | 000000 | 00 |
8 | 8" | Plain | 30 | 0000000 | 00000 | 26 | 0000000 | 00000 |
9 | 9" | Plain | 30 | 0000000 | 00000 | __ | 000000 | 00 |
10 | 10" | Plain | 30 | 0000000 | 00000 | 26 | 0000000 | 000000 |
12 | 12" | Plain | 30 | 0000000 | 00000 | 26 | 0000000 | 000000 |
Chemical-Resistant Duct and Fittings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/205/2051k889-1634673510-p9@halfx_637702523318112159.png?ver=imagenotfound)
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.
Sloped Roof Vent Caps
![](/prerenderstable/mvPRE/contents/gfx/imagecache/690/6904k34p1-h01a-digital@halfx_636927309427543293.png?ver=imagenotfound)
Cover external vents to reduce downdrafts and prevent obstructions from entering the vent.
For Duct | Painted Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Ht. | Wd. | Dia. | Ht. | Wd. | Lg. | Gauge | Features | Includes | Each | |
For Rectangular and Round Duct | ||||||||||
10" | 3 1/4" | 8" | 6 5/8" | 14 1/4" | 18 3/4" | 24 | Bird Screen | Backdraft Damper | 0000000 | 000000 |
Wall Vent Caps
![](/prerenderstable/mvPRE/contents/gfx/imagecache/690/6904k36p1-h01a-digital@halfx_636927306373492357.png?ver=imagenotfound)
Cover external vents to reduce downdrafts and prevent obstructions from entering the vent.
For Duct | Mounting | Painted Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Ht. | Wd. | Ht. | Wd. | Lg. | Gauge | Features | Includes | Fasteners Included | Hole Dia. | Each | |
For Rectangular Duct | |||||||||||
10" | 3 1/4" | 5 5/8" | 12 3/4" | 8 7/8" | 24 | Bird Screen | Backdraft Damper | No | 3/16" | 0000000 | 000000 |
Dampers for Drop-Ceiling Diffusers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/185/18525k81p1-h01a-digital@halfx_636922953051861384.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/185/18525k112-@halfx_637399931584749257.png?ver=imagenotfound)
For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these dampers regulate airflow. Dampers mount to a collar.
Dampers with a butterfly opening/closing style open on a middle hinge. The removable handle adjusts the damper to control airflow and is easier to adjust than dampers with a radial opening/closing style.
Dampers with a radial opening/closing style open in a circle for more precise airflow than dampers with a butterfly opening/closing style.
For technical drawings and 3-D models, click on a part number.
For Duct Trade Size | Material | Each | |
Butterfly Opening/Closing Style | |||
---|---|---|---|
6 | Galvanized Steel | 00000000 | 000000 |
8 | Galvanized Steel | 00000000 | 00000 |
10 | Galvanized Steel | 00000000 | 00000 |
12 | Galvanized Steel | 00000000 | 00000 |
14 | Galvanized Steel | 00000000 | 00000 |
Radial Opening/Closing Style | |||
6 | Galvanized Steel | 000000000 | 00000 |
8 | Galvanized Steel | 000000000 | 00000 |
10 | Galvanized Steel | 000000000 | 00000 |
12 | Galvanized Steel | 000000000 | 00000 |
14 | Galvanized Steel | 000000000 | 00000 |