GAF Master Flow ERVHYBRID Roof Mount Dual-Powered Attic Ventilator
Master Flow® Green Machine™ ERVHYBRID Dual‑Powered Roof Ventilator
Unique technology automatically switches between solar (up to 525 CFM airflow) and house power (750 CFM airflow). This dual-powered vent switches automatically between solar and house power to help reduce excessive heat and moisture in the attic during cloudy weather or at night. When on solar power, it provides up to 525 CFM airflow and when on house power 750 CFM airflow. Includes adjustable thermostat control and helps reduce the energy costs of purely house-powered vents.
For up to 800 sq. ft. of attic space. 120VAC power connection required.
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