BDD backdraft dampers are available in the spring-loaded and gravity style backdraft dampers. The spring loaded dampers are available in 4", 5", 6", & 8"models with a center pin design and a 10" & 12" center post design. The gravity damper is available in 7",14" & 16" and offers a galvanized steel housing and aluminum butterfly damper blades. Available backdraft damper models include:
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BDD100 |
Backdraft Damper, Spring Close, 4" Duct |
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BDD125 |
Backdraft Damper, Spring Close, 5" Duct |
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BDD150 |
Backdraft Damper, Spring Close, 6" Duct |
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BDD200 |
Backdraft Damper, Spring Close, 8" Duct |
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BDD250 |
Backdraft Damper, Spring Close, 10" Duct |
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BDD300 |
Backdraft Damper, Spring Close, 12" Duct |
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BDD175 |
Backdraft Damper, Gravity Operated, 7" Duct |
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BDD355 |
Backdraft Damper, Gravity Operated, 14" Duct |
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BDD400 |
Backdraft Damper, Gravity Operated, 16" Duct |
Features & BenefitsSpring Loaded Backdraft Dampers
- Neoprene damper seal minimizes leakage
- 20 gauge steel housing, aluminum spring loaded butterfly damper blades
- Gasket designed to withstand temperatures from -22 F to 180 F
- Requires from 0.04 to 0.08 in. wg pressure to open
- Simple installation in any position - entire assembly inserts into duct
- Exterior foam gasket assures a tight seal against duct
- 4", 5", 6" & 8" sizes include stamped metal sleeve with center pin design
- 10" & 12" sizes include rolled metal sleeve with center post design
Gravity Operated Backdraft Dampers
- Low air leakage design
- Galvanized steel housing, aluminum butterfly damper blades
- Gravity operated closure
- Install in horizontal or vertical (upblast only) position
- Suitable for supply or exhaust applications
- Available in three sizes: 7", 14" & 16" sizes
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