FIELD: civil engineering. SUBSTANCE: vertical diaphragms 2 between collecting and supply channels 5,4 do not extend over entire height of unit. Horizontal diaphragms 6,7 are arranged in lower portion of unit being united with vertical diaphragms. Surfaces of diaphragms facing supply channel 4 are made inclined and relatively parallel to form lower developed face of diaphragm 7 at side of collecting channel 5. EFFECT: enhanced reliability of sealing of ventilating unit channels in mounting owing to increased area of contact of unit and support surface, simplified design of unit, improved ventilation. 1 dwg
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|---|---|---|---|
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|
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