FIELD: construction.
SUBSTANCE: soundproof device comprises an attached part, an engaged structure for fixation to a trough profile and an arm arranged between the attached part and the engaged structure. The soundproof device has spring rigidity of not more than 12000 kg/m. The soundproof device may be arranged between a support structure and a sheet material.
EFFECT: increased efficiency of sound insulation.
11 cl, 51 dwg, 2 tbl, 4 ex
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