The VEKA SOFTLINE 82 MD system is a particularly high-performance system with a centre seal. The innovative multi-chamber geometry of SOFTLINE 82 MD ensures excellent thermal insulation with values of up to Uw = 0.74 W/(m²K) when using highly insulating triple glazing with_Ug = 0.5 W/(m²K). In a thermally optimized version with thermally separated steel reinforcements, SOFTLINE 82 MD also easily meets the most stringent energy efficiency requirements - from low-energy houses to passive houses.