The system is suitable for triple functional glazing and supports triple-pane glass up to 52 mm (STV® 54 mm), with an intelligent sealing concept featuring consistently three sealing levels. Thanks to the 6-chamber geometry and the large installation depth of the frame and sash, it provides very good thermal and sound insulation, contributing to a high level of comfort and energy efficiency.
It is optimised for the use of STV® dry glass bonding technology and sash offset for improved structural stability, while the narrow visible profile width and 15° slope give a timeless, elegant appearance that easily integrates into both modern and classic architectural styles.
The development of a system with superior thermal insulation properties is no coincidence, but rather the result of targeted and carefully guided engineering work. The results clearly confirm this — numerous calculations have demonstrated the outstanding thermal insulation values that this system achieves.
From the very beginning, the development goal was to achieve a Uf value of 0.92 W/m²K, suitable for passive houses even in the standard combination with steel, thereby meeting all passive house standard requirements; this was achieved thanks to innovative details in the system design.
Even with the classic variant of this system, you can give your home a personal touch — the variety of colours and shapes is virtually unlimited, allowing you to design your door entirely according to your individual wishes.
The concealed sash appearance of the door further contributes to a high aesthetic value, without compromising the security and thermal insulation that the door must meet; furthermore, the clean lines of the "hidden" sash allow for easy maintenance and simple cleaning.
