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.
Airflow dampers regulate airflow.
| Duct Size | ID | Gauge | End Construction | Blade Material | Each | |
Galvanized Steel | ||||||
|---|---|---|---|---|---|---|
| 3 | 3 3/16" | 22 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 4 | 3 15/16" | 22 | Rolled | Galvanized Steel | 00000000 | 00000 |
| 5 | 4 15/16" | 22 | Rolled | Galvanized Steel | 00000000 | 00000 |
| 6 | 6" | 22 | Rolled | Galvanized Steel | 00000000 | 00000 |
| 7 | 7" | 22 | Rolled | Galvanized Steel | 00000000 | 00000 |
| 8 | 8" | 22 | Rolled | Galvanized Steel | 00000000 | 00000 |
| 9 | 9" | 22 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 10 | 10" | 22 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 12 | 12 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 14 | 14 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 16 | 16 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 18 | 18 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 20 | 20 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 22 | 22 1/8" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
| 24 | 24 1/16" | 20 | Rolled | Galvanized Steel | 00000000 | 000000 |
304 Stainless Steel | ||||||
| 4 | 3 15/16" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 5 | 4 15/16" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 6 | 6" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 7 | 7" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 8 | 8" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 9 | 9" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 10 | 10" | 22 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 12 | 12 1/8" | 20 | Rolled | 304 Stainless Steel | 00000000 | 000000 |
| 14 | 14 1/8" | 20 | Rolled | __ | 00000000 | 000000 |
| 16 | 16 1/8" | 20 | Rolled | __ | 00000000 | 000000 |
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. Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance.
Airflow dampers control airflow through duct. Gasketed dampers are airtight.
Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Male OD | Gauge | Gasket Material | End Construction | Blade Material | Each | |
Standard | |||||||
| 4 | 3 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 5 | 4 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 6 | 5 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 7 | 6 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 8 | 7 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 9 | 8 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 10 | 9 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 12 | 11 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 00000 |
| 14 | 13 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 16 | 15 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 18 | 17 3/4" | 20 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 20 | 19 3/4" | 18 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 22 | 21 3/4" | 18 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
| 24 | 23 3/4" | 18 | __ | Plain | Galvanized Steel | 00000000 | 000000 |
Gasketed | |||||||
| 4 | 3 7/8" | 20 | Neoprene Rubber | Plain | Galvanized Steel | 0000000 | 000000 |
| 6 | 5 7/8" | 20 | Neoprene Rubber | Plain | Galvanized Steel | 0000000 | 000000 |
| 8 | 7 7/8" | 20 | Neoprene Rubber | Plain | Galvanized Steel | 0000000 | 000000 |
| 10 | 9 7/8" | 20 | Neoprene Rubber | Plain | Galvanized Steel | 0000000 | 000000 |
| 12 | 11 7/8" | 20 | Neoprene Rubber | Plain | Galvanized Steel | 0000000 | 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.
Airflow Dampers
Regulate airflow by adjusting dampers from fully open to fully closed. Dampers are undersized to fit inside duct.
For Duct | Overall | Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | Dp. | Gauge | Seal Material | Connection Type | Each | |
| 12" | 12" | 11 3/4" | 11 3/4" | 5 1/2" | 16 | Vinyl Plastic | Press Fit | 0000000 | 0000000 |
| 14" | 14" | 13 3/4" | 13 3/4" | 5 1/2" | 16 | Vinyl Plastic | Press Fit | 0000000 | 000000 |
| 16" | 16" | 15 3/4" | 15 3/4" | 5 1/2" | 16 | Vinyl Plastic | Press Fit | 0000000 | 000000 |
| 24" | 24" | 23 3/4" | 23 3/4" | 5 1/2" | 16 | Vinyl Plastic | Press Fit | 0000000 | 000000 |
| 36" | 36" | 35 3/4" | 35 3/4" | 5 1/2" | 16 | Vinyl Plastic | Press Fit | 0000000 | 000000 |
Fire-Rated Airflow Dampers
In the event of a fire, these dampers automatically stop airflow through duct. They have a fusible link that melts at 165° F, releasing a spring and causing the blades to close. Dampers meet UL 555 fire safety standards to help prevent the spread of fire for 1 ½ hours. They are undersized to fit inside duct.
Overall | Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Duct Size | OD | Gender | Ht. | Wd. | Gauge | Connection Type | Each | |
| 4 | 3 3/4" | Male | 6 3/4" | 6 3/4" | 22 | Press Fit | 00000000 | 0000000 |
| 6 | 5 3/4" | Male | 8 3/4" | 8 3/4" | 22 | Press Fit | 00000000 | 000000 |
| 8 | 7 3/4" | Male | 10 3/4" | 10 3/4" | 22 | Press Fit | 00000000 | 000000 |
| 10 | 9 3/4" | Male | 12 3/4" | 12 3/4" | 22 | Press Fit | 00000000 | 000000 |
| 12 | 11 3/4" | Male | 14 3/4" | 14 3/4" | 22 | Press Fit | 00000000 | 000000 |
For Duct | Overall | Galvanized Steel | ||||||
|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | Dp. | Gauge | Connection Type | Each | |
| 8" | 8" | 7 3/4" | 7 3/4" | 4 7/8" | 22 | Press Fit | 0000000 | 000000 |
| 12" | 12" | 11 3/4" | 11 3/4" | 4 7/8" | 22 | Press Fit | 0000000 | 00000 |
| 14" | 14" | 13 3/4" | 13 3/4" | 4 7/8" | 22 | Press Fit | 0000000 | 00000 |
| 18" | 18" | 17 3/4" | 17 3/4" | 4 7/8" | 22 | Press Fit | 0000000 | 000000 |
| 24" | 24" | 23 3/4" | 23 3/4" | 4 7/8" | 22 | Press Fit | 0000000 | 000000 |
Automatic Airflow Dampers
Save energy and increase comfort by heating and cooling only the areas that need it. Dampers automatically close when signaled by a thermostat or switch (not included).
Overall | Galvanized Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Duct Size | Female ID | Male OD | Ht. | Wd. | Gauge | Electrical Connection Type | Voltage | End Construction | Connection Type | Each | |
| 5 | 5" | 4 7/8" | 9 1/4" | 7" | 24 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 0000000 |
| 6 | 6" | 5 7/8" | 10 1/4" | 8" | 24 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 8 | 8" | 7 7/8" | 12 1/4" | 10" | 24 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 10 | 10" | 9 7/8" | 14 1/4" | 12" | 24 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 12 | 12" | 11 7/8" | 16 1/4" | 14" | 24 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 14 | 14" | 13 7/8" | 18 1/4" | 16" | 22 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 16 | 16" | 15 7/8" | 20 1/4" | 18" | 22 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
| 18 | 18" | 17 7/8" | 22 1/4" | 20" | 22 | Hardwire | 24V AC | Crimped | Press Fit | 0000000 | 000000 |
Dampers for Drop-Ceiling Diffusers
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 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 |