| 摘要 |
<p>The sliding ventilator assembly is for installation or below a door or window frame, having a slide with apertures working between walls also with apertures. A gauze screen is accommodated in the housing parallel to the slide. The outer plate-type wall (2) of the housing, with protruding guard strips (18) to keep the rain out, bears against the frame at the edges, while the inner one (3) with slide (8) and screen (9) is detachable from it. The profiled portion of the frame acting as a stop for the door or window is situated vertically above or below the guard strips.</p> |
