Concealed variable speed control with last setting memory means the hood is set for the next time you cook your favorite dish 440 CFM at 7.0 Sones on high setting, 120 CFM at 0.5 Sones on low setting Two halogen lamps (designed for bulbs up to 50 W, GU10 bulbs purchase separately) light up the cooktop and surrounding area. Two-level light control gives you unmatched visibility Mesh grease filters with Antimicrobial Protection are dishwasher-safe. The coating inhibits the growth of odor causing bacteria and protects the filter so it stays cleaner in between cleanings. Your kitchen stays fresher longer Optional Non-Duct Recirculation Kit NDK35830SS for installations where ducting to the exterior is not possible Heat Sentry is a smart feature that detects excessive heat and adjusts speed to high automatically to prolong product life Non-Duct Filter 88F required for non-ducted installations, purchased separately