Key features of the 30" Electric cooktop include downdraft ventilation, a 10-inch Even-Heat™ Ultra element, 6" Even-Heat element, a 3-speed fan with 300 CFM exhaust rating and stainless steel knobs. Downdraft Ventilation Integrates the ventilation system into the cooking surface so that a separate hood is not needed. Smoke and odors can be removed and taken outside or filtered and recirculated inside. A duct-free kit is available for purchase separately. 10'' Even-Heat™ Ultra Element with Simmer Setting Provides more versatility for high and low temperature cooking techniques. Even-Heat™ Technology maintains a constant supply of power and delivers a range of simmer settings. 6" Even-Heat™ Element with Melt Setting Combines the benefits of Even-Heat™ Technology with a dedicated setting that reaches the low temperatures needed to melt chocolate or butter without scorching 300 CFM Exhaust Rating Handles the venting requirements of high temperature cooking techniques like pan searing and stir-frying. 3-Speed Fan Control Can be precisely matched to cooking needs, effectively removing steam, grease, and odors from the air. CookShield Finish for Glass Surface Protects the cooktop surface from scratches, helping keep it looking pristine even with frequent use. 9''/6'' Ultra Power™ Double-Ring Round Element Two element sizes in one provide the ability to use it for large stock pots or six-inch sauté pans and handle tasks ranging from rapid boiling and searing to wok cooking. Convertible to Duct-Free Ventilation Allows a downdraft cooktop to be placed nearly anywhere in the kitchen using a duct-free conversion kit (not included). This filters and recirculates the air without running ductwork, ideal for kitchens with installation restrictions or ducting limitations. Power-On Indicator Light Lets you know at a glance when an element is on. Hot-Surface Indicator Provides a clear indication that lets you know if any cooking surface is on or still hot. Pure Color Ceramic-Glass Surface Comes in saturated colors with stainless steel control knobs for a sophisticated, easy-to-clean appearance. Stainless Steel Knobs Enhance the look of the cooktop surface with sturdy construction that adds to their premium feel. 6'' Round Element Can reach a power output of up to 1200 watts to handle your daily cooking needs.