Broan Broan 10 Inch Universal Automatic Make-Up Air Damper with Pressure Sensor Kit

Features:Interlocking make-up air dampers allow the range hood to operate at optimum levels by providing outside air when required to keep the air in the home fresherA sensor is attached to the exhaust duct to detect if the range hood is operating instead of requiring a direct wire connection between range hood and damperInterlocked make-up air damper systems meet IRC code requirements for make-up air with range hoods over 400 CFMSlave dampers can be connected to this main unit, providing a cost effectiv...