文化シヤッター株式会社 manufactures fire and smoke shutters, specific fire-protection doorsets and building-envelope products from seven domestic plants. It publishes a full 国土交通大臣認定書一覧 across the EA-, EB- and CAS- families with a downloadable certificate per approval number; its 防火防煙シャッター slats hold individual 遮煙 approvals CAS-0670, CAS-0295, CAS-0873 and CAS-0296, and the Selewall retractable smoke curtain uses non-combustible glass cloth certified NM-0349. It is a first-class member of the Japan Shutter & Door Association.