Designed to work with commercial hood liners and commercial-style range hoods (sold separately), the Whirlpool in-line blower has a powerful 1, 200 CFM motor that can help clear the air in your kitchen when it's placed above high-powered gas burners. With 3 speed levels and external venting, it can tackle all your kitchen ventilation needs. | Whirlpool 1200 CFM In-Line Blower - Stainless Steel