![Master Flow ERV4BL Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel, Black [SKU: ORG0359505]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/600x600/products/71535/69890/0359505__45989.1692630202.jpg?c=1 "Master Flow ERV4BL Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel, Black [SKU: ORG0359505]")
Product Overview
PSC (permanent split capacitor) motor provides maximum operating efficiency, 1000 cfm roof-mounted power attic vent with thermostat to help reduce damaging heat and moisture from your attic. [QTY/UOM: 1EA / 1EA]
![Master Flow ERV4BL Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel, Black [SKU: ORG0359505]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/1280x1280/products/71535/69890/0359505__45989.1692630202.jpg?c=1 "Master Flow ERV4BL Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel, Black [SKU: ORG0359505]")
![Master Flow ERV4 Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel [SKU: ORG0359497]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/71534/69889/0359497__70733.1692630201.jpg?c=1 "Master Flow ERV4 Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel [SKU: ORG0359497]")
Master Flow
![Master Flow ERV4WW Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel [SKU: ORG0359513]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/71536/69891/0359513__63719.1692630202.jpg?c=1 "Master Flow ERV4WW Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel [SKU: ORG0359513]")
Master Flow
![Master Flow ERV5BL Power Attic Vent, 600 sq-in Net Free Ventilating Area, 1250 cfm Air, Steel, Black [SKU: ORG0359539]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/71538/69893/0359539__41860.1692630203.jpg?c=1 "Master Flow ERV5BL Power Attic Vent, 600 sq-in Net Free Ventilating Area, 1250 cfm Air, Steel, Black [SKU: ORG0359539]")
Master Flow
![Master Flow ERV5WW Power Attic Vent, 600 sq-in Net Free Ventilating Area, 1250 cfm Air, Steel [SKU: ORG0359521]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/71537/69892/0359521__37698.1692630202.jpg?c=1 "Master Flow ERV5WW Power Attic Vent, 600 sq-in Net Free Ventilating Area, 1250 cfm Air, Steel [SKU: ORG0359521]")
Master Flow
![Master Flow ERV6SMWW Power Attic Vent, 720 sq-in Net Free Ventilating Area, 1500 cfm Air, Steel [SKU: ORG0359547]](https://cdn11.bigcommerce.com/s-iqof5nfcfj/images/stencil/500x659/products/71539/69894/0359547__74066.1692630203.jpg?c=1 "Master Flow ERV6SMWW Power Attic Vent, 720 sq-in Net Free Ventilating Area, 1500 cfm Air, Steel [SKU: ORG0359547]")