| 摘要 |
<p>A duct adaptor for coupling between a diffuser frame assembly and an air conditioning/heating duct, the duct adaptor having a first wall portion which, in use, is coupled to the diffuser frame and a second wall portion which, in use, is located within an end of the duct; and a plurality of baffles mounted within the wall portion, the baffles being biased into a closed position in which flow of air through the duct adaptor is substantially prevented, the baffles being arranged, in use, to move into an open position when a predetermined flow rate of air flows from the duct to be discharged through the diffuser frame.</p> |
