A multilayered composite panel made of beech plywood and a special 3mm-thick rubber insulating layer. This layer, placed symmetrically in the centre of the panel, is made of special rubber, which suppresses vibrations and reduces the sound intensity level caused by the thermal expansion of metals or rolling friction. Wherever proper sound insulation is needed for various manufacturing applications in buses and trains, Paged BeechPly Phon FR comes in hand. It is available in a one-sided film-faced version. It meets the highest level of fire classification – HL3 in class R10, in the single-sided film-faced version.