Erv4 Attic Fan

Master flow power attic vent erv4 roof mount 1 000 cfm roof mounted power attic vent with thermostat to help reduce damaging heat and moisture from your attic. This attic vent can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation. Our vents remove the greatest volume of hot and or humid air from your attic saving you more in heating and cooling costs than any other type of ventilation.

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