Mechanically, this Order changes how customs duties apply to a specified imported good: "canvas, cement impregnated, PVC backed one side" (tariff 6810.99.00) by applying item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 (under s.269P of the Customs Act 1901). It takes effect from 22 September 2010 and continues until revoked under ss.269SC or 269SD. The change affects importers' costs and government duty receipts; compliance requires correct tariff classification and administrative revocation.