Chlorinating units for water treatment; Filters for water filtering apparatus; Filters made of fiber for water filtration; Filters, heaters and pumps sold in combination for use in swimming pools and hot tubs; Filters, heaters and pumps sold in combination for use in hot tubs; Filters, heaters and pumps sold in combination for use in swimming pools; Swimming pool chlorinating apparatus; Swimming pool water cleaning and filtering units; Water filtering apparatus; Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; Water filtering units for domestic, commercial and industrial 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 and ice makers; Water filtration apparatus; Water purification and filtration apparatus; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, reverse osmosis filtration units; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units