... . for conference rooms, restaurant, receptionroom, bathroom etc3. High quality ABS material 4. Round air outlet connected with flexible pipe5. Exhaust ... indoor polluted air, wet gas, smoke, dust6 Household exhaust fan,100% copper wire motor7.CE,CCC Certificate can be approvedSpecification ... according to different market requirement SRL12R/24R High quality Electric ABS Ventilation Fan/Exhaust fan