Dimensions and duct outlets

Figure 1. Dimensions Vallox 51 MV
Figure 2. Dimensions Vallox 51K MV
Figure 3. Duct outlets, R model

Inner diameter of the female collar ∅ 125 mm.

1
Outdoor air to the unit
2
Exhaust air flowing outdoors from the unit
3
Supply air from the unit to the apartment
4
Extract air from the apartment to the unit
Figure 4. Duct outlets, L model (left-handed)