Features: Includes a powerful 430 CFM single centrifugal motor, ideal for quickly clearing your kitchen of residual heat and unwanted air pollution. Dishwasher safe and easy to replace aluminum mesh filters trap and remove unwanted contaminants such as grease and food residue. Bathe your cook top in the warm glow of 2 halogen bulbs (bulbs not included). Innovative 4-speed electronic controls provide for unparalleled mastery of your kitchen environment. Beautiful painted steel or stylish stainless steel construction available. Enjoy the convenience of a convertible ventilation system – clean and circulate internal air while maintaining kitchen temperatures and saving on heating/cooling bills (Model S99010310). Home Ventilating Institute (HVI) certified. Underwriters Laboratories (UL) listed.Product Technologies: Heat Sentry™: Broan's Heat Sentry technology vastly improves the safety capability of the range hood by automatically engaging the blower to its maximum speed once an excessive temperature has been reached. Convertible Range Hood: Convertible range hoods can function either as a ventilated (ducted) or recirculating unit. The primary benefit being that it allows for the broadest compatibility across multiple kitchen environments. A convertible unit can be made into recirculating typically through the purchase of a recirculating kit. Convertible units don't compromise their efficiency or functionality between ducted or re-circulating configurations, leaving the choice entirely dependent on what's the most convenient for the end user. Clean Sense™ Charcoal Filters (Non-Ducted Installation Only): Broan Clean Sense™ charcoal filters (BPSF42, sold separately) feature an innovative built-in indicator that changes color when it is time to replace your filters—an easy maintenance reminder that ensures your range hood is always functioning at its best. Specifications: CFM: 430 Width: 42" Depth: 20" Height: 7-1/4" Height Above Cooktop: 16-3/4" Voltage: 120 Sones: 5.5 Blower Speeds: 4 Ducting: 7" Round or 3-1/4" x 10" Motor Type: Single CentrifugalProduct Variations: QS330: 30" Wide QS336: 36" Wide QS342 (This Model): 42" Wide