█ Mechanical ventilation connection-> 110x54 in, 110x54 out, 90deg angle with extraction point 4 0 17
█ Mechanical ventilation connection-> 220x54 in, 220x54 out, 90deg angle with extraction point 2 0 13
█ Mechanical ventilation connection-> 220x54 in, 110x54 out, 90deg angle with extraction point 4 0 17
