不二サッシ株式会社 manufactures aluminium and steel building openings, curtain walling and fire-rated assemblies for commercial buildings. It publishes a consolidated ビル用防火設備 大臣認定番号一覧 covering its 国土交通大臣認定 portfolio, dominated by the EB- 防火設備 family — EB-3068-2, EB-3245-2, EB-3394-1 and EB-3525 among them — with a specification sheet linked to each approval number.