High insulation bifold door system, with total face width of 148mm on the Left and the Right. PVC system KÖMMERLING Falttür 76AD is one of the most integrated eco-friendly solutions, featuring excellent thermal-insulation, soundproofing and sealing properties, in combination with their great burglar-resistance performance and durability. The casement comes in various colours so that it can be perfectly integrated in the place where it is fitted.