This Order, made under section 269P of the Customs Act 1901, declares that rotary air heaters classified at tariff heading 8404.10.00 are subject to Item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995, effective 30 August 2006 until revoked under sections 269SC or 269SD. It was signed by a delegate of the Chief Executive Officer. Importers of these heaters and customs officials are affected because the Order alters which tariff concession applies; the delegate’s decision and any later revocation determine tariff treatment and related import compliance.