This Order declares that certain polyvinyl chloride pipe ducting (Customs Tariff classification 3926.90.90) is eligible for the Schedule 4 tariff concession (Item 50), effective 8 June 2010, continuing until revoked under the Customs Act (s.269P; revocation ss.269SC–269SD). Practically, importers of the listed PVC ducting can claim reduced or zero customs duty; the Commonwealth forgoes the associated tariff revenue. The concession was issued by a delegate of the Chief Executive Officer (signed David Mulcair), creating an administrative compliance step for importers to claim the benefit.