This order declares that a specific type of prefabricated vertical sub‑surface drain (non‑woven filter geotextile bonded to a polyolefin open‑fluted core; thickness ≤5 mm; width ≤100 mm) is eligible for Schedule 4, item 50 of the Customs Tariff Act 1995, thereby changing its tariff treatment on import. It was made by a delegate under s.269P, takes effect from 19 September 2011 and continues until revoked under ss.269SC or 269SD. Importers must ensure goods meet the physical description to claim the concession; Customs administers verification.