38
To ensure internal ventilation, aeration channels must be provided as illustrated in the figures 36 and 37.
600 |
30 mm |
Fig. 36
50 mm |
|
50 | 550 |
Fig. 37 |
|
38
To ensure internal ventilation, aeration channels must be provided as illustrated in the figures 36 and 37.
600 |
30 mm |
Fig. 36
50 mm |
|
50 | 550 |
Fig. 37 |
|
