This order, made under section 269P of the Customs Act 1901, treats specific air filter cartridges for gas-turbine intake systems (tariff heading 8421.39.00) that measure between 550 mm and 880 mm as goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies. It took effect 20 October 2008 and remains in force until revoked under sections 269SC or 269SD or until any listed end date. Importers of those cartridges are directly affected because the order changes their tariff treatment at import; the decision was recorded by a delegate of the CEO.