| 摘要 |
<p>A ventilated sliding closure having a ventilator integral with the frame head (20) is disclosed. The closure includes a frame (4) which consists of a frame head (20), a sill (22) and two vertical jambs (18). The frame (4) supports two or more panels (6, 8), at least one of which is a horizontally sliding panel (6). The frame head (20) includes two parallel spaced apart support rails (24, 26) which engage longitudinal grooves in the top rails (14) of each panel (6, 8). The support rails (24, 26) include apertures (50) which provide an air flow path through the frame head (20). A closure (54) of the hit-and-miss type for selectively closing the apertures (50) is preferably included in the frame head (20) to provide selective control of the ventilation.</p> |
