Backdraft damper with lightweight blades and foam closure to eliminate noise and increase energy efficiency

• Prevent backdraft through kitchen, bath, forced air, solar, and other exhaust/intake systems.
• Easy to install, maintenance free, and made of 26 gauge heavier steel
• Foamed shutter system for quiet closure
• Vertical (except facing down) or horizontal mounting - one ended crimped 
• Dampers are available in sizes 3" up to 24 Inch ducting.
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