(Ul)(Li)1500 Max Cfm(/Li)(Li)Can Be Mounted Remotely To Minimize Blower Noise. (/Li)(Li)Powerful And Quiet, Inline Blowers Are Available In A Range Of Cfm Ratings To Match Your Cooking Preferences And Ventilation Requirements. (/Li)(Li)Specially Designed Resilient Motor Mounts And Housing Isolation Mounts Prevent Vibration Noise. (/Li)(Li)Flexible Duct Design Allows Straight-Through Or Right-Angle Connections With Built-In Damper. (/Li)(Li)For Use With Best By Broan Hoods And Downdrafts, Including The D49M Cattura Downdraft, Designed To Use External Blowers.(/Li)(/Ul)External Blowers Are Located Remotely Outside Of The Range Hood And Come In Two Versions, Exterior And In-Line: (Ul)(Li)In-Line Version: Located With In The House Structure, Between The Hood And The Exterior Vent Cap(/Li)(/Ul)