Folding doors based on the Decalu 88 Folding Doors system provide very good thermal insulation in winter, and in summer they allow you to open the interior space to a garden or terrace.
Uw = 1.3 W/(m²K)* when using the 4th / 16Ar / 4 / 16Ar / 4th package – Ug = 0.6 W/(m²K), argon-filled, with aluminum frame.
*Coefficient calculated for a door with dimensions of 4000 x 2200 mm.
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