Flame-retardant wood wool multi-layer board with rock wool core. Two-layer board made of white cement-bonded wood wool top layer and non-flammable Knauf Insulation rock wool with high biosolubility and RAL quality mark. Back side laminated with glass fleece. Heat-insulating, sound-absorbing, permeable to diffusion. Due to the use of natural raw materials, color variations in the top layers are possible.

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