... air outlet connected with flexible pipe 6'8"Bathroom Exhaust fan/ventilation fan 1. Low noise, little ... air outlet connected with flexible pipe 6'8"Bathroom Exhaust fan/ventilation fan1. Low noise, little vibration ... ceiling. for conference rooms, restaurant, receptionroom, bathroom etc3. Exhaust effectively indoor polluted air, wet gas, smoke, ... /9000/11000 6'8"Bathroom Exhaust fan/ventilation fan