| 摘要 |
In a grid for the intake and/or discharge of air, with a housing (7) fitted in an aperture (5) and a cover frame (10), a frame (3) is to be releasably fitted on the cover frame (10). For this purpose the cover frame (10) has a securing strip (11) which has an engagement device (12) on the frame (3) to accept a catch (19). |
