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.
Galvanized steel has good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Add damper blades to duct to control airflow.
Galvanized Steel | |||||
|---|---|---|---|---|---|
| Duct Size | Female ID | Gauge | Includes | Each | |
| 14 | 14" | 24 | Handle | 0000000 | 000000 |
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.
Galvanized steel has good corrosion resistance. 304 stainless steel is more corrosion resistant than steel.
For technical drawings and 3-D models, click on a part number.
Galvanized Steel | 304 Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|
| Duct Size | Male OD | Gauge | End Construction | Each | Each | ||
Male | |||||||
| 3 | 2 7/8" | 24 | Spiral | 0000000 | 000000 | 00000000 | 000000 |
| 4 | 3 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 4 | 3 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 5 | 4 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 00000 |
| 6 | 5 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 6 | 5 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 7 | 6 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 00000 |
| 8 | 7 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 8 | 7 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 9 | 8 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 9 7/8" | 24 | Plain | 000000 | 00 | 0000000 | 00000 |
| 10 | 9 7/8" | 24 | Spiral | 0000000 | 00000 | 000000 | 00 |
| 12 | 11 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 00000 |
| 14 | 13 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 000000 |
| 16 | 15 7/8" | 24 | Spiral | 0000000 | 00000 | 00000000 | 000000 |
| 18 | 17 7/8" | 24 | Spiral | 000000 | 00 | 00000000 | 000000 |
| 20 | 19 7/8" | 24 | Spiral | 00000000 | 00000 | 00000000 | 000000 |
| 22 | 21 7/8" | 24 | Spiral | 00000000 | 00000 | 000000 | 00 |
| 24 | 23 7/8" | 24 | Spiral | 00000000 | 00000 | 000000 | 00 |
Sure-Seal Spiral Duct and Fittings
Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape. Fittings have male ends with a slightly smaller diameter to press-fit into duct. These duct and fittings are compatible with Crush-Resistant Spiral Duct and Fittings.
For technical drawings and 3-D models, click on a part number.
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).
For technical drawings and 3-D models, click on a part number.
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 |
Furnace Draft Dampers
Also known as barometric dampers, these dampers improve furnace performance by automatically opening and closing to maintain a consistent airflow despite changing environmental conditions.
Single-acting dampers open inward to prevent strong drafts from pulling too much heat into the chimney vent.
Double-acting dampers open both inward and outward to relieve pressure caused by obstructions and downdrafts.
Steel | ||||||
|---|---|---|---|---|---|---|
| Draft Damper Type | For Duct Trade Size | Gauge | For System Type | Connection Type | Each | |
| Single Acting | 7, 8, 9 | 24 | Coal, Oil | Press Fit | 0000000 | 0000000 |
| Single Acting, Double Acting | 9, 10 | 24 | Coal, Natural Gas, Oil, Propane | Press Fit | 0000000 | 000000 |
| Single Acting, Double Acting | 11, 12 | 24 | Coal, Natural Gas, Oil, Propane | Press Fit | 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 |
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 |