BACKDRAFT BUTTERLY DAMPER in Connecting Sleeve
Our Price: $28.37
FAMCO Back Draft Damper in Connecting Sleeve. Opens with Normal Air Flow - Gravity Close. No Springs or Hinges. 4" thru 20" Duct
Ideal Back Draft Damper for Air Exhaust, Fresh Air Intake, Heat Exchangers and other Air Duct applications.
Butterfly Damper Plates open due to Duct Air Pressure. The butterfly plates are inset into the connecting sleeve at a 10 deg angle which causes them to fall closed in the absence of Duct Air Pressure
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Foam Seal provides minimum air leakage.
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No Springes or Metal Hinges to go bad.
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Use in both Horizontal and Vertical applications.
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Opens easily with normal air flow - closes by gravity.
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Sizes 4" thru 14" 28ga / 16" thru 20" 24ga
| BD - DUCT SIZE - SLEEVE LENGTH | ||
| 4" - 6" L | 5" - 6" L | 6" - 6" L |
| 7" - 7" L | 8" - 8" L | 9" - 8" L |
| 10" - 7" L | 12" - 9" L | 14" - 12" L |
| 16" - 14" L | 18" - 18" L | 20" - 20" L |
