ELIMINATE HUMIDITY FROM LAUNDRY ROOMS TOBACCO SMOKE FROM RECREATION ROOMS FUMES FROM WORKSHOPS OR COOKING FUMES FROM KITCHENS WITH THIS EXHAUST FAN FEATURES INCLUDE A SPECIALLY DESIGNED POLYMERIC FAN BLADE AND A BUILT-IN DAMPER TO MINIMIZE BACKDRAFTS THE HOUSING ADJUSTS TO FIT WALLS FROM 4-12 TO 9-12 THICK
