Master Flow WHFS24M Whole House Fan, 4500 cfm Air, Aluminum

Master Flow whole house fans are smart energy savers for any climate where cooling 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.
Unit: EA
UPC: 050206023853
Model Number: WHFS24M