WHOLE HOUSE FAN: The cool attic 24 in. direct drive 2-speed whole house fan is designed for houses with 1, 800 sq. ft. attics. It offers an efficient way to reduce cooling costs, while keeping your whole house more comfortable. It features a powder coated finish for weather resistance. Rough opening- 26 inch x 28 inch. Outside shutter dimensions- 27-3/4 inch x 29-3/4 inch | ATTIC FAN: It works by pulling fresh air in from the outside and expelling the warm air up into the attic and pushing it out through your attic exhaust vents. Save on energy costs, remove stale, unhealthy air, and improve your home's atmosphere. What's not to love? | MADE IN AMERICA: No cut corners, no cheap parts, no worry installation. Made in the heartland of Texas, we've been assembling fans since 1948 with legendary customer service. Don't save a dollar and gain a headache, go with quality you can trust. | QUIET ENGINEERING: Re-engineered bracing system creates a more stable motor mount, is stronger than tube-style bracing, and virtually eliminates vibration. No more helicopter in your hallway, these units are quieter with less vibration than the units of...

Product Description This Cool Attic 24-inch direct drive 2-speed whole house fan with shutters will help cool down your home in those hot months. It has a precision-balanced aluminum fan blade assembly with 4 blades, unlike 3 in most competing brands for greater air movement. It has a joist-in/joist out installation and steel venturi for enhanced durability. The shutter is a white powder-coated finish automatic shutter with 95% plus air closure. A wall switch is included with high/low/off settings. It is UL and C-UL listed and comes with a 10 year warranty. This model is designed for up to 1,800 square feet on one story and has a CFM high/low of 4,600/3,200. This unit needs 8 to 10 square feet of net free exhaust area. From the Manufacturer This Cool Attic 24-inch direct drive 2-speed whole house fan with shutters will help cool down your home in those hot months. It has a precision-balanced aluminum fan blade assembly with 4 blades, unlike 3 in most competing brands for greater air movement. It has a joist-in/joist out installation and steel venturi for enhanced durability. The shutter is a white powder-coated finish automatic...