Backward ECOFIT centrifugal fans AC single phase motor Backward impeller plastic or galvanized steel, Impeller diameter of 133 up to 315mm, AC single phase capacitor external rotor motor 230V50/60Hz and 120V50/60Hz, Motorized wheel (RRE) or module with integrated inlet cone (RRM), Maximum airflow of 315 up to 1900m3/h, maximum pressure of 100 up to 600Pa, CE, UL, CCC mark, Options: special voltage, three phase motor, inlet cone.