This Tariff Concession Order (made under s 269P of the Customs Act 1901) declares that a specific type of filter bag (tariff classification 5911.90.10—expanded polytetrafluoroethylene microporous membrane) is a good to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 24 March 2010. Mechanically, that makes imports of these bags eligible for the Schedule 4 concession (altering the customs duty treatment); the order was made by a delegate and can be revoked under ss 269SC–269SD, creating a compliance and revocation risk for importers.