For Cooks Who Have More To Make But Less Undercounter Space, This Perimeter Ventilation Hood Clears The Air Edge-To-Edge With A Powerful 400 Cfm Class Motor, Yet With A Low Profile That Leaves Room For Culinary Exploration. Whisper Quiet? System Maintains A Hushed 0.1 Sones (43 Dba) At Low Speed. Heat-Sensor-Enabled Auto Speed Setting Helps Busy Cooks Keep Their Cool.