Declares certain water filters (Customs Tariff classification 8421.21.90) to be goods covered by Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, changing their tariff treatment for imports. The order commenced 7 July 2009 and remains in force until revoked under sections 269SC or 269SD or until any specified end date. This affects importers and customs agents, who must classify and document these goods to obtain the Schedule 4 treatment; the declaration was made by a delegate under section 269P.