Background Ventilation (via Ventilation Flap based on double glazed windows):
Ventilation Capacity : | at 4Pa : | at 8Pa : | at 10Pa: | at 20Pa : |
| CK02 – | 4.0 l/s | 5.7 l/s | 6.4 l/s | 9.3 l/s |
| MK04 – | 5.8 l/s | 8.4 l/s | 9.5 l/s | 13.7 l/s |
| MK06 – | 5.8 l/s | 8.4 l/s | 9.5 l/s | 13.7 l/s |
| MK08 – | 5.8 l/s | 8.4 l/s | 9.5 l/s | 13.7 l/s |
| PK06 – | 7.1 l/s | 10.2 l/s | 11.5 l/s | 16.6 l/s |
| PK08 – | 7.1 l/s | 10.2 l/s | 11.5 l/s | 16.6 l/s |
| PK10 - | 7.1 l/s | 10.2 l/s | 11.5 l/s | 16.6 l/s |
| SK06 – | 8.5 l/s | 12.3 l/s | 13.9 l/s | 20.1 l/s |
Ventilation : | Equivalent Area : mm² | Geometrical Free Area : mm² |
| CK** | 2600 | 2800 |
MK**
| 3700
| 4500
|
PK**
| 4600
| 6100
|
SK**
| 5600
| 7200
|
Finishes:
Internal - White-painted finished with triple coat,
white painted (NCS standard colour: S 0500-N, nearest RAL standard colour: 9003).
External – Maintenance-free cover parts.
Aluminium dark grey,(NCS standard colour: S 7500-N, nearest RAL standard colour 7043)