Broan-Nutone 655 Designer Bathroom Heater/Fan/Light, 70 CFM, 4.0 sones decorative fan & heater functions independently or together with bright 100W light capacity, (bulb not incl.). 20A circuit required, Type IC, 2 blower wheels, each powered by its own permanently lubricated plug-in motor, 1300W heater delivers fast, even heat distribution, built-in damper prevents back drafts, slotted mounting brackets span up to 24-inches for easy installation, polymeric 4-inch round duct features a 2-inch long tapered sleeve for easy, positive ducting.