whole house fan shutter

direct drive whole house fan with automatic shutter, pulls air from a house size of 1500 square feet, 4500 CFM, runs on high and low, 2 speed pull chain included, needs 864 square ...

36", Belt Drive, Whole House Fan With Automatic Shutter, Pulls Air From House Size Of Up To 2300 SQFT, 6900 CFM, Shutter Opening Of 34-1/4" x 36-3/4", 2 Speed Wall Switch, 10 Year ...