Apparatus for cleaning air; Apparatus for cooking; Cooker hoods; Appliances for cooking; Cooking appliances; Cooking installations; Cooking ranges; Cooking units; Exhaust hoods (cooker hoods); Extractors (ventilation or air conditioning); Extractor fans; Extractor hoods for kitchens; Fans for exhaust extractors; Filters for air extractor hoods; Grease filters (parts of extractor fans); Hoods incorporating extractor fans; Air extractor hoods for use with cookers; Extraction hoods for cookers; Hoods for cookers; Installations for air extraction; Machines for use in the preparation of food (cooking); Vapour extraction hoods for cookers; Vapour extraction hoods for stoves; Extractor units (ventilation); Ventilating units; Ventilation hoods; Fans for ventilating; Ventilating fans; Apparatus for exhausting fumes (ventilation); Hoods for ventilating apparatus; Ventilation apparatus; Ventilation grilles being parts of extractor fans; Filters for exhaust extractors (parts of ventilation installations); Ventilation installations