The Master Flow 4,500 CFM Power Whole-House Fan is designed for houses larger than 1,000 sq. ft. It works with or without central ducting to cool your home by pulling fresh air in from outside and pushing warm air up and out into the attic. It has a 24 in. shutter and features a low-vibration direct-drive mechanism for quiet, reliable performance.
- Moves air at a rate of 4,500 CFM so your home stays cool and fully ventilated
- Pulls cool fresh air in from outside while pushing warm air up into the attic
- Designed for houses larger than 1,000 sq. ft.
- 1/4 HP permanent split capacitor motor provides ample power for home ventilation and ensures long-lasting use
- Quiet direct-drive operation
- Includes super-quiet automatic white ceiling shutters
- Galvanized Steel construction
- Safe U.L./U.L. Canada listed
- Inside dimensions: 26-1/4 in. x 26-1/4 in.