Broan XB110 Exhaust Fan ULTRA Fans Bathroom Features: ULTRA quiet at Less than 0 3 Sones So remarkably quiet you will think it s turned off Simple Snap in blower and mounting duct Faster than average retrofit installations Mounting Frame Expands from 14andrdquo; to 24andrdquo; Energy Star Qualified UL Listed Specifications: 110 CFM Reduces all that un wanted steam in your bathroom Clearing up to 100 Square feet Duct Size 6" Grille Length 13 Grille Width 14 Housing Length 10 5 Housing Width 11 3 8 Housing Height 7 5 8 3 Year Warranty Product Technologies: Energy Efficient: The Ultra Series by Broan Nutone offers a unique solution for all customers The incredibly easy installation of the Ultra bath fan makes installing a snap for professionals and consumers alike Never have to get in the attic In addition to the quickest installation of any bath fan on the market today the Ultra Series also features some amazing energy saving features The Ultra Series is Energy Star certified and rated energy efficient by the Home Ventilation Institute (HVI) About Broan Nutone: Broan Nutone is the leader in the ventilation category providing solutions in the bath fans range hoods IAQ categories and more Broan Nutone has been providing home ventilation solutions for over 80 years and is committed to providing affordable solutions that save money and protect homes Broan and Nutone products are made in the United States and are part of a commitment to taking care of customers with quality products