About Duct Connections
More
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.
For technical drawings and 3-D models, click on a part number.
Vent Caps
Exhaust Vent
Intake Vent
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 |
Sloped Roof Vent Caps
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
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 |