|Air permeability||class 4|
|Watertightness||class E 1500 Pa|
|Thermal insulation (Uf)||ST variant: from 1.39 W / m2K|
| ||Variant SI: From 0.92 W / m2K|
| ||Variant Areo: from 0.57 W / m2K|
|Resistance to wind load||Class C5|
On the basis of the ALU INdustrial Thermal Energy (MB-86) thermal window system, it is also possible to make panel doors with extremely rich possibilities aesthetic. This is the type of door that meets the expectations of the most demanding users.