Ключевые слова: architecture, background, building, choice, clear, close up, closed, construction, cross section, cut, design, detail, door, double glazed, efficiency, energy, energy efficiency, frame, framework, furniture, girder, glass, glazed, heat exchange, heating bill, home, horizontal, house, indoor, industry, inside, installation, insulation material, interior, manufacturing, material, modern, part, performance, plastic, polymer, polyvinyl, profile, pvc, renovation, section, separation, structure, window frame, wood texture,