Master Flow WHFS Whole House Fan, cfm Air, Aluminum ★ Digital display shows current temperature ★ Over-temperature cut-off protection → Control Your Home Temperature
Master Flow® whole house fans are smart energy savers for any climate where refreshing costs are a concern. They help beat the heat by forcing hot air out of the home while bringing in cooler outside air. Whole house fans are an important part of a complete home ventilation system.
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