This Order (under s.269P of the Customs Act 1901) declares that pressurised doors that are parts for a germination kiln (Tariff classification 8419.90.00) are to be treated under Part III, Schedule 4, item 50 of the Customs Tariff Act 1995 from 7 September 2009 until revoked. Mechanically, it changes the tariff treatment applied at import for those specific parts; the customs CEO (or delegate) decides eligibility, importers must claim the concession and meet classification/compliance requirements, and this alters import incentives relative to other sourcing.