This Tariff Concession Order treats specific motor-vessel doors and/or windows (stainless steel frames, toughened glass panes, ceramic band fittings) as falling under a Schedule 4 tariff concession item, effective 20 November 2008. Mechanically, it changes how those imported goods are treated for tariff purposes under the Customs Tariff Act 1995. It affects importers, vessel builders and customs officials because it alters who pays duty and creates administrative and compliance obligations; the delegate made the order under s269P and it can be revoked under ss269SC/269SD (Customs Act 1901).