Erv4 Attic Fan

Master flow power attic vents erv4 erv5 and erv6 roof mount and master flow attic exhaust vent high capacity dome vent hcd144 miami dade approval 16 0209 11 doc type. This attic vent can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation. Energy efficient uses up to 55 less electricity than typical competitor s vents based on gaf testing at 120 volt helps reduce energy costs and helps prolong the life of the roof and shingles.

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