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Sliding non-threshold balcony door HS Portal 250 is ideal for people who value the proximity of the surrounding nature and want to have as much light as possible in their houses. With the unique fitting system by SIEGENIA, we can produce sliding balcony doors with a width of up to 18 meters and a maximum height of 2.7 m. Despite such large dimensions, the HS balcony leaf opens and closes very easily. The specially designed "warm" aluminium profile which is the threshold of the HS balcony makes it possible to embed the bottom of the balcony door on a par with the floor level in a living room. Using the HS balcony, the height difference between the outer and inner side of the building is only 19 mm.

Overall U-value:
0,69 W/m2K
Acoustic value:
34-42 dB (depending on the glazing unit)
Water-tightness class:
Class E750
Class of air permeability:
Class 4
Resistance to wind load:
Class C2