FIELD: air ventilation or conditioning.
SUBSTANCE: insulating panel comprises at least one insulating core made of a mineral wool and glass wool based material and outer layer made of, e.g., a thin aluminum film . The outer side of the panel is provided with a number of rectilinear marks inclined to the longitudinal direction of the panel. The marks form two beams of lines oppositely inclined and oriented at an angle to the longitudinal direction.
EFFECT: reduced friction resistance.
21 cl, 41 dwg
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