WhisperGreen Select™ One fan with multiple IAQ solutions. Customizable, all-in-one fan and fan/LED light combinations with pick-a-flow speed selector. Unique plug and play modules provide up to three value-added features. Revolutionary DC motor with SmartFlow™ technology ensures optimal CFM output. Flex-Z Fast™ bracket provides flexible, fast and easy installation. Can be used to comply with ASHRAE 62.2, LEED, CALGreen and ENERGY STAR for Homes 3.0. UL listed for tub/shower enclosure when used with a GFCI protected circuit. 6 year warranty on DC motor, 5 years on LED, 3 years on parts.