11 Air filters for domestic use; Coffee filters not of paper being part of electric coffee makers; Filters and filtering devices for air and gas conditioning; Filters for air conditioning; Filters for drinking water; HEPA filters for household use; Water filtering units for domestic use; Water filters; Water filtration and purification units and replacement cartridges and filters therefor; Water filtration and purification units and replacement cartridges and filters therefor for refrigerators, ice makers