Fourfold glazing for u=0,8 thermal insulation

There was 1980 no offer for thermal insulation glazing like today. Ing.Heinz Eggert constructed doors and windows himself.



Fourfold glazing for u=0,8 thermal insulation
There was 1980 no offer for  thermal insulation glazing like today. Ing.Heinz Eggert constructed doors and windows himself.


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