1
Carbon for filters; filtering materials (chemical preparations); filtering materials [unprocessed plastics]; filtering materials (mineral substances); filtering materials [vegetable substances]; ceramic materials in particulate form for use as filtering preparations
11
Filters (parts of household or industrial installations); filters for air conditioning; air filtering installations; filter apparatus, included in class 11; air-conditioning installations; air-conditioning apparatus; cooling installations for liquids; cooling installations and machines; refrigerating apparatus; refrigerating containers; walk-in refrigerators; refrigerated cabinets; air heaters; filters for air conditioning; air filtering installations; air freshening apparatus; air sterilisers; air driers; ventilation installations (air-conditioning); radiators, electric; regulating and safety accessories for air conditioning apparatus; fans (air-conditioning); fans (parts of air-conditioning installations); heat pumps; heat regenerators; heat accumulators; heat exchangers
24
Filtering materials of textile