... influence on decoration effect. fresh air ventilator---celling series(1)fresh air ventilator description fresh air ventilator ... rotator, R-heat tube2,Performance : Q- total heat exchanger, X-sensible heat exchanger3,Installation form: D-celling, L ... XHBQ-D10T means: fresh air ventilator, exchanger structural style:plate,Performance : total heat exchanger, Installation form: celling, Operation Mode ...