Head-Power "PWP" exhaust ventilators provide air flow from 2500CMH to 60000 CMH. They are suitable for use in the exhaust systems of hotels, mansions, theaters, airports, hospitals, industrial and mining enterprises, scientific research centers, and so on. They can be used to exhaust contaminated air, so they are ideal terminal equipment for use in kitchens, warehouses, and other places that are easy to be polluted.