FIELD: ventilation.
SUBSTANCE: air duct (1) comprises a jacket (3), at least one inlet hole (7) and at least one outlet hole (5), limiting an inner volume (9) for passage of an air flow (F). The air duct additionally comprises at least one through channel (31), installed in the inner volume (9) and going out from the jacket (3). The through channel is impermeable for the air flow passing via the air duct.
EFFECT: improved functional capabilities and reduced dimensions of a structure.
19 cl, 6 dwg
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