Knauf stone wool K2 110 kg / m³ (50 mm) - high density and solid heating and sound isolation material. This insulation made of natural stones of volcanic origin is distinguished by long-term exploitation, high sustainability and excellent sound absorption features. 110 kg / m³ density gives extra mechanical strength to structures and is applied in the insulation of industrial, commercial and highly installed objects. Thanks to 50 mm thickness, it increases energy efficiency, prevents loss of heat and provides the comfort of the domestic environment.