| 摘要 |
<p>The ventilation grid has fixed, downwardly sloping jalousie slats, and is intended for a housing protected against spray water. The airing grid has an arched outline, and has a frame (5) resting on the housing wall, with a water draining channel (7) between them. The jalousie slats (2) have at their top edge a projection. Additional ventilating channels (3, 4) are provided at the grid bottom, and the grid can be locked in the opening in the housing. Air is conveyed upwards into the ventilating channels.</p> |
