This Order, signed by a delegate of the CEO, declares that moulded fibreglass gratings described under tariff classification 3926.90.90 are to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies from 6 Feb 2008. Mechanically, it changes the tariff treatment that applies to those imported goods. Importers of the specified gratings are directly affected because the Order determines which Schedule 4 item governs their tariff treatment and how revocation can occur under the Customs Act.