Dimensions and duct outlets Figure 1. Dimensions and duct outlets Duct outlets, R model 1 Outdoor air to the unit 2 Supply air from the unit to the apartment 3 Extract air from the apartment to the unit 4 Exhaust air flowing outdoors from the unit Duct outlets, L model 1 Extract air from the apartment to the unit 2 Exhaust air flowing outdoors from the unit 3 Outdoor air to the unit 4 Supply air from the unit to the apartment Ventilation unit dimensions - duct outlets A 900 B 547 C 236 D 100 (female) E 87 F 197 G 86 H 161 I 161 J 86 K 96 L 206 N View from right O View from above P View from left Q Right side R Left side S Seen from behind The letters refer to the letters in the figure Dimensions and duct outlets.Figure 2. Other ventilation unit dimensions Ventilation unit dimensions - other dimensions A 431 B 91 C 16 D 548 E 530 F 236 G 935 H 900 I Service space J Power plug cord K Siphon L Alternative siphon M Space required for installation The letters refer to the letters in the figure Other ventilation unit dimensions. Figure 3. Condensing water outlet dimensioning ()