Vent-A-Hood BH234PSLDGS Installed in Cabinet. Wall Mounted Hood Liner Insert. Magic Lung Filter-less Blower. Knob controls. 4-Speeds 6.5 Sones. SensaSource and LED Lights. 600 CFM B200 Dual Blower. 22 1/2 inch Deep. BHSLD Premier Magic Lung Wall Mounted Liner Inserts. The standard ventilation of the BHSLD model is intended for use over standard cooking equipment. Special Depth 18 inch deep. Recommended mounting height is 24 inch to 27 inch above the cooking surface. All Vent-A-Hood products are suitable for use in damp locations (outdoor applications such as a covered patio) when installed in a GFCI protected branch circuit. The Premier Magic Lung blower. It can handle cooking equipment with higher cubic feet per minute (CFM) requirements. 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