Air filtering units; Air filters for industrial installations; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Filter cartridges for industrial dust collection systems for use in pulse-jet cleaning; Filters and filtering devices for air and gas conditioning; HEPA filters for household use; Industrial air filter machines; Sewage purification apparatus; Waste water purification apparatus, installations and tanks; Water filtration and purification units and replacement cartridges and filters therefor; Water filtration apparatus; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units
Environmental Control Apparatus