Air filtering units; Air filters for domestic use; Apparatus for filtering drinking water; Aquarium filters; Coffee capsules, empty, for electric coffee machines; Coffee filters not of paper being part of electric coffee makers; Coffee percolators, electric; Electric coffee brewers; Electric kettles; Espresso dosing rings adapted to fit portafilters for electric espresso machines; Filters for drinking water; Filters for water filtering apparatus; Filters, heaters and pumps sold in combination for use in swimming pools; Household tap-water filters; Industrial air filter machines; Strainers for water lines; Water filtration and purification units and replacement cartridges and filters therefor; Water purification and filtration apparatus; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, water filtration units