FIELD: construction, road engineering.
SUBSTANCE: double-layer window comprises many horizontal window beams; two external vertical window stands and many internal vertical window stands (122), which are fixed into horizontal window beams; an external (150) and an internal (140) folds, arranged in appropriate areas formed by horizontal window beams and vertical window stands and distanced from each other, forming a chamber (160) between them of a certain size. In the vertical window stands there are horizontal ventilation facilities (170), which provide for communication of a chamber via them that is formed between the inner and outer folds of one of the areas with other chambers formed between the inner and outer folds of the adjacent areas.
EFFECT: improved efficiency of ventilation.
4 cl, 7 dwg
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