This Tariff Concession Order (TCO 0612373) makes a specific water-to-air thyristor-valve cooler that meets the listed technical specs eligible for the tariff concession at item 50 of Part III, Schedule 4 of the Customs Tariff Act 1995, effective 25 July 2006 (declared under s.269P, Customs Act 1901). It affects importers of that exact model: importers may claim the Schedule 4 concession, the Commonwealth forgoes the associated customs duty, and importers must demonstrate the goods meet the stated specifications; the order lasts until revoked under ss.269SC/269SD.