... , no influence on decoration effect. fresh air ventilator---celling series(1)fresh air ventilator description fresh air ventilator ... total heat exchanger, X-sensible heat exchanger3,Installation form: D-celling, L-vertical, G- Wall Hanging4,Operation Mode: blank- ... style:plate,Performance : total heat exchanger, Installation form: celling, Operation Mode: multi-velocity, fresh air volume: 1000m3/h.