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QuietCool Classic Whole House Fan QC CL-4700
Quiet Cool brand of whole house fans have become a favorite across america. The QC CL-4700 approaches home ventilation in a different way, the whole house ventilation allows you to bring the cooler outdoor air through your windows, home and attic space to thoroughly cool and ventilate both the home and attic. Quiet Cool uses a patented design that uses an acoustical duct attached to an R5 damper box. The result is almost zero noise vibration and whisper quiet operation. QC CL-4700 Airflow: High 4672 CFM / Low 3586 CFM Energy Efficiency: High 519 Watts / Low 491 Watts @ 7.91 / 7.30 CFM/Watt Grille: 16 in. x 32 in. Attic Venting Required: 6.2 Sq. Ft.