URSA TERRA Mur Plus P1203 mineral wool panel, according to EN 13162 standard, non-hydrophilic, covered with kraft paper as a vapor barrier. The product is recommended for Intermediate insulation in double brick walls, Plasterboard wall. Properties: Reaction to fire: F Thermal conductivity coefficient:0.032 W/mK: thermal resistance R=1.25 [m2K/W] -thickness 40[mm], thermal resistance R=1.55 [m2K/W] -thickness 50[mm], thermal resistance R=1.85 [m2K/W] -thickness 60[mm]; thermal resistance R=3.10 [m2K/W] -thickness 100[mm], thermal resistance R=3.75 [m2K/W] -thickness 120[mm]; thermal resistance R=4.35 [m2K/W] -thickness 140[mm]