Push button switches control blower speeds and light, Smooth-flow blower wheel design and high flow filters ensure quiet operation,1.5 Sones, at normal speed, LED lights flood the cooktop and surrounding area with generous illumination (bulbs included), Dual dishwasher-safe, open mesh filters provide efficient grease removal, Captur(TM) system and 375 max blower CFM is 98.1% efficient in removal of smoke and odor from cooking, Non-duct capable with use of charcoal filters, sold separately, Hidden louvers on top of hood exhaust away from cabinetry