The average kitchen is about 2.5 by 4 meters and has a capacity between 20 and 30 m³. For this type of kitchen you need an extractor hood with an extraction capacity between 160 to 240 m³. How much this is exactly depends on the exact dimensions of your kitchen and whether the kitchen is closed or open. A cooker hood in an open kitchen has to do more work because the cooking fumes spread faster and therefore require a larger extraction capacity. The cooker hoods on this page are suitable for use in an average kitchen.