The 4STARS profile is the ideal option in terms of price versus benefits. This profile is specific for severe climatic conditions.

  • PVC profile with 5 chambers
  • width of PVC profiles: 70 mm (mounting depth)
  • classic design (straight)
  • galvanized steel reinforcement: 1.25 mm – 3.2 mm
  • two types of gaskets

Benefits

Benefits

The 4STARS profile is the ideal option in terms of price ver

Thermal and sound insulation

THERMAL INSULATION

The pleasant atmosphere inside your home also depends on maintaining a comfortable temperature throughout the year. All QFort windows have high thermal insulation properties, thus meeting the most demanding needs.

Values:

– windows equipped with double thermal insulating glass (24mm): Ug = 1.0 W/m²K, Uw* = 1.22 W/m²

– windows equipped with triple thermal insulating glass (36mm): Ug = 0.7 W/m²K, Uw* = 1.01 W/m²

* The Uw value is calculated for a standard 1230 mm x 1480 mm window with a surface area of 1.82 m² and a warm spacer.

The U coefficient represents the thermal transfer value of a building element (wall, window, door etc.) and shows how well that specific building element conducts heat. The smaller the U coefficient, the lower the thermal losses and the better the thermal insulation of that building element.

SOUND INSULATION

To ensure that the relaxed and wonderful feeling inside your home is not affected by the restlessness of the ever-changing external environment, QFort has a number of soundproofing options that you can take into account. Thus, we recommend choosing windows equipped with glass with sound insulation properties specific to the area where you live.

Values: min. 30dB (-1; -4) max. 41dB (-1; -5)

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