Mechanically, this Tariff Concession Order (made under s.269P of the Customs Act 1901) declares that aluminium casings and junction boxes classified at 7616.99.00 are goods to which Schedule 4, item 50 of the Customs Tariff Act 1995 applies from 11 April 2008 and continuing until revoked under ss.269SC or 269SD. Importers of those goods bear the financial effect (the duty or concession set by Schedule 4 item 50); the CEO’s delegate makes and can revoke the concession, so importers must monitor classification and revocation risk.