WhisperValue® DC™ Fan/LED light with multi-speed for ASHRAE 62.2 compliance allows you to select the proper CFM settings to satisfy ASHRAE 62.2 continuous ventilation requirements. It is the lowest profile ENERGY STAR® rated ventilation fan. Ideal for residential construction (single & multi-family) and manufactured homes. It features Panasonic's revolutionary ECM motor with SmartFlow™ optimum CFM technology, and incorporates a Pick-A-Flow™ speed selector switch to customize airflow (80-100 cfm).