Vent-A-Hood BH446PSLBSS Installed in Cabinet. Wall Mounted Hood Liner Insert. Magic Lung Filter-less Blower. Knob controls. 4-Speeds 6.5 Sones. SensaSource and LED Lights. 1200 CFM B200 B200 Two Dual Blowers. 22 1/2 inch Deep. The Premier Magic Lung blower. It can handle cooking equipment with higher cubic feet per minute (CFM) requirements. It can deliver equivalent CFM much more efficiently. The powerful Magic Lung blower traps all cooking contaminants, liquefies grease vapor and removes heat-polluted air. You will hear only a whisper of air movement. Magic Lung system provides the quietest ventilation available. The Magic Lung is the only residential ventilation system on the market today that prevents fire from spreading to the rest of the home. Constant speed creates centrifugal pressure that prevents fire from entering the ductwork. As needed, SensaSource increases blower speed to its normal level to maintain this safety feature. Magic Lung blowers can be configured to provide the power you need for even the most demanding cooking surface. Each highly efficient Magic Lung blower supplies 300 CFM of air movement; you can combine multiple blowers in a single Vent-A-Hood to create the perfect ventilation for your cooking surface