URSA TERRA Mur P1281 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:0.035 W/mK: thermal resistance R=1.40 [m2K/W] -thickness 50[mm], thermal resistance R=1.70 [m2K/W] -thickness 60[mm]; thermal resistance R=2.25 [m2K/W] -thickness 80[mm], thermal resistance R=2.55 [m2K/W] -thickness 90[mm],thermal resistance R=2.85 [m2K/W] -thickness 100[mm], thermal resistance R=3.40 [m2K/W] -thickness 120[mm]; thermal resistance R=4.00 [m2K/W] -thickness 140[mm]; thermal resistance R=4.55 [m2K/W] -thickness 160[mm]; thermal resistance R=5.10 [m2K/W] -thickness 180[mm]; thermal resistance R=5.70 [m2K/W] -thickness 200[mm];