Ventilation rate per roomRegionBelgium (NBN D 50-001)Netherlands (Bbl)Roomliving roombedroomstudyplayroomclosed kitchenbathroomutility roomopen kitchentoiletFloor area (m²)ResultRequired: 108 m³/h fresh-air supply (30 dm³/s).Source: SW-S21 Definitie van het minimumdebiet (residentieel, NBN D 50-001)More explanation: How much ventilation does a room need?Calculator with general information, not advice or an inspection. Check the source and reference date.