The Battic Door Whole House Attic Fan Ceiling Shutter Seal is an energy-saving insulating seal for Whole House Attic Fans. It reduces air-leakage through the whole house attic fan saving the homeowner heating and cooling loss and energy costs. The Battic Door Whole House Attic Fan Ceiling Shutter Seal is easily installed over the fan louver from the house side in the fall and removed in the spring. By reducing the amount of heat and moisture leaking into your attic, the severity of ice dams and attic mold is greatly reduced! PLEASE NOTE THAT OTHERS SELL AN INFERIOR KNOCK-OFF WHICH HAS RECEIVED POOR REVIEWS. OUR PRODUCT IS FAR SUPERIOR AND SHOULD NOT BE CONFUSED WITH THE KNOCK-OFF. THANK YOU.
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