Of opening and
— windows must have a certain opening system and design in order to comply with certain climatic conditions. Here we mean the number of double -glazed windows, sealing, the method of opening and ventilation, and t. D.;
— windows must have a certain opening system and design in order to comply with certain climatic conditions. Here we mean the number of double -glazed windows, sealing, the method of opening and ventilation, and t. D.;
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