11 Air filters for HVAC units in industrial air filtration; electrostatic air filters for HVAC units; water filters; water treatment filters being filters for water treatment apparatus; filters for swimming pools or aquarium; filters for gas conditioning; filter cartridges of non-woven fabrics for gas, air, and liquid filtration for use in automotive, agriculture, construction, food processing industry, industrial manufacturing, and mining; filters for microfiltration and ultrafiltration and reverse osmosis of liquids for filtering milk, beverages, and drinking water, and for purification of waste water; filters of non-woven fabrics for reinforcing semi-permeable diaphragms for microfiltration and ultrafiltration and reverse osmosis for filtering swimming pool water; filters and filters cartridges for milk, beverage and drinking water filtration installations and apparatus, in particular ready-made filter cartridges of non-woven fabrics; filters containing non-woven materials being parts of gas, air and liquid filtration installations; filters containing non-woven materials for air purification installations; filters containing non-woven materials for dust removal for use in pulse-jet cleaning; filters of non-woven materials for air purification installations; filters containing non-woven materials being parts of apparatus and installations that filter milk, beverages, and drinking water; air conditioners for vehicles; filters for air conditioning, ionization apparatus for the treatment of air; filters for drinking water; filters comprising glass fibers, especially microfibers made of glass for analysis of aquarium water or waste water; air conditioners for vehicles; air filtering installations; air purifying apparatus and machines; air cooling apparatus; gas scrubbing apparatus; water filtering apparatus; water purifying apparatus and machines; water purification installations; purification installations for sewage; ventilation cabinets being ventilation units for commercial food preparation; ventilation installations and apparatus, namely, ventilating exhaust fans