The newly redesigned WhisperLite Series revolutionizes the ventilation fan industry.  Panasonic set out to make their already super-quiet ventilation fans even quieter.  Not just quieter in fact, but the quietest.  This exhaustive effort yielded TechnoFlow, patent pending technology that has sparked a revolution in ventilation excellence. The new FV-VQL4 series of nearly silent ventilation fans feature two-storied, double-tapered, dolphin shaped blades, along with dual chamber technology.  These design improvements were made specifically to reduce the already low sone levels to levels which were previously thought unattainable.  All Panasonic FV-VQL4 fans are extremely quiet, designed for continuous operation (100,000 plus hours), Energy Star rated, UL Listed and Comply with California's Titile 24 requirements. Current Models Available: FV-08VQL4 - 80 cfm, 0.3 sones, 25.2 watts, 36 watts with lights on, nightlight 4 watts, 4" duct FV-11VQL4 - 110 cfm, 1.0 sones, 35.9 watts, 36 watts with lights on, nightlight 4 watts, 4" duct FV-15VQL4 - 150 cfm, 1.2 sones, 35.7 watts, 36 watts with lights on, nightlight 4 watts, 6" duct (You will need the adobe acrobat reader plug in in order to view the spec sheets in PDF format) Our Panasonic Exhaust Fan Customer Service Guarantee. We Guarantee What We Sell.  Our knowledgeable full time staff is dedicated to handling your every need, pre-sales questions, expert advice, including warranty claims covered under our sales terms.  Rest assured, when you buy from R.E. Williams you are getting peace of mind should any problem ever arise in the future.  Orders generally ship the same business day ordered. ALL Photos On This Site Are Copyrighted ©2006 REWCI.COM (Click Photo To Enlarge) Fan Housing/Ballast/Mounting Brackets/Light Grill/2 18 watt Bulbs (Click Photo To Enlarge) View Of Fan As It Would Sit In Your Attic - Note: Built-In Backdraft Damper (Click Photo To Enlarge) View Of Fan Housing From From Side - This Part Of Fan Sits On Ceiling Of Structure