| 摘要 |
<p>A ventilation fan assembly comprising a housing (10) adapted to be mounted in a reveal (35) of a window of a door adjacent a frame member of a window or door; the housing (10) having aperture means (15, 16) and including fan means (11) for causing air flow through the aperture means (15, 16) and thus air flow in the atmosphere ambient the housing.</p> |
