Made of galvanized steel, these dampers prevent air leakage into your fan setup. They are easy to install, fit directly onto the ducting, and prevent a back draft of air when the fans are switched off.
Available in 4″, 6″, 8″, 10″, & 12″.
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Place Categories: Active Air and Ventilation.
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Stupid question but do you spray this onto like furniture and curtains etc. Not in the air?? Cuz it
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