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DFARS Specialty Metals
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Draft Damper Type
For System Type
Automatic Airflow Dampers
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Keep temperatures comfortable while saving energy. Control these dampers with a switch or thermostat so you’re only heating and cooling the areas that need it.
Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.
Overall | Galvanized Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Duct Size | ID | OD | Ht. | Wd. | Electrical Connection Type | Voltage, V AC | Ga. | Each | ||
| 5 | 5" | 4 7/8" | 9 1/4" | 7" | Hardwire | 24 | 24 | 1179N15 | 0000000 | |
| 6 | 6" | 5 7/8" | 10 1/4" | 8" | Hardwire | 24 | 24 | 1179N16 | 000000 | |
| 8 | 8" | 7 7/8" | 12 1/4" | 10" | Hardwire | 24 | 24 | 1179N18 | 000000 | |
| 10 | 10" | 9 7/8" | 14 1/4" | 12" | Hardwire | 24 | 24 | 1179N21 | 000000 | |
| 12 | 12" | 11 7/8" | 16 1/4" | 14" | Hardwire | 24 | 24 | 1179N22 | 000000 | |
| 14 | 14" | 13 7/8" | 18 1/4" | 16" | Hardwire | 24 | 22 | 1179N24 | 000000 | |
| 16 | 16" | 15 7/8" | 20 1/4" | 18" | Hardwire | 24 | 22 | 1179N26 | 000000 | |
| 18 | 18" | 17 7/8" | 22 1/4" | 20" | Hardwire | 24 | 22 | 1179N28 | 000000 | |
Barometric Draft Dampers
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These dampers improve furnace performance by automatically opening and closing to maintain a consistent airflow despite changing environmental conditions.
Single-Acting Damper—Single-acting dampers open inward to prevent strong drafts from pulling too much heat into the chimney vent.
Double-Acting Damper—Double-acting dampers open both inward and outward to relieve pressure caused by obstructions and downdrafts.
Steel | |||||||
|---|---|---|---|---|---|---|---|
Draft Damper Type | For Duct Size | Ga. | For System Type | Fitting Connection | Each | ||
| Single Acting | 5, 6, 7 | 26 | Coal, Oil | Press Fit | 1782K22 | 0000000 | |
| Single Acting | 7, 8, 9 | 24 | Coal, Oil | Press Fit | 1782K24 | 000000 | |
| Single Acting, Double Acting | 9, 10 | 24 | Coal, Natural Gas, Oil, Propane | Press Fit | 1782K13 | 000000 | |
| Single Acting, Double Acting | 11, 12 | 24 | Coal, Natural Gas, Oil, Propane | Press Fit | 1782K14 | 000000 | |
| Double Acting | 5, 6 | 26 | Natural Gas, Propane | Press Fit | 1782K18 | 000000 | |
| Double Acting | 7, 8 | 26 | Natural Gas, Propane | Press Fit | 1782K12 | 000000 | |
