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 1026 B 626 C 293 D 125 (female) E 110 F 254 G 110 H 200 I 200 J 96 K 96 L 231 M 624 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 519 B 91 C 16 D 626 E 600 F 293 G 1060 H 1026 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 ()