QC-STL-PRO-4.8X-RF Stealth Pro X Series Whole House Fan With RF Control

Whole House Fan, Series: Stealth Pro X, CFM: 4280/3500/2361, Watts: 408/225/73.9, Duct Diameter: 18", Grille: 16" x 32"

Looking to cool your home without the high energy costs? QuietCool Whole House Fans use natural fresh air to cool your home for just pennies on the dollar. Improve your home comfort and save 50-90% on home cooling with a QuietCool!