Declares a tariff concession for specific imported belt-driven steel fans (both primary and secondary air fans) by applying item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 to goods at tariff heading 8414.59.90, effective 18 Sept 2007 until revoked. Importers of these fans can benefit from the Schedule 4 concession; the delegate of the Chief Executive Officer issued the Order and the concession can be revoked under sections 269SC or 269SD. This changes import costs, government tariff receipts, and procurement incentives.