This Order (under section 269P of the Customs Act 1901) declares that metal, retractable, self‑locking security grills (Customs Tariff classification 7308.30.00) are covered by Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 31.05.06 until revoked. It directly affects importers of those grills by making them eligible for the Schedule 4 tariff treatment (Table, Column 1–2). The CEO’s delegate may revoke the Order under sections 269SC or 269SD, so importers must monitor classification and revocation risk for compliance and duty planning.