The backflow damper prevents the ingress of cold or warm air and wind from entering through the ventilation duct. The 4 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are ...
LOUISVILLE, KY--(Marketwired - May 19, 2015) - When Keith O'Loane, an experienced Dryer Vent Wizard (DVW) franchise owner and technician, receives service calls in the spring about customers' dryers ...
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