Door manufacturer at Winikon holding 24 live VKF recognitions — Brandschutztüren mit Verglasung (12), Brandschutztüren (10) and vertical fire-rated glazing (2). Its approvals sit in one contiguous 40110–40133 block, meaning the whole range was taken through VKF assessment together rather than accumulated over decades, so every product in the catalogue is certified to the current requirements.