Semi-rigid URSA TERRA Manta fieltro MNU 40 mineral wool panel, according to EN 13162 standard, non-hydrophilic with high mechanical performance, without coating. Supplied in rolled panel . The product is recommended for pichted roof. Properties: Reaction to fire: A1 Thermal conductivity coefficient:0.040 W/mK; thermal resistance R=2.00[m2K/W] -thickness 80[mm], thermal resistance R=2.50 [m2K/W] -thickness 100[mm], thermal resistance R=3.00 [m2K/W] -thickness 120[mm], thermal resistance R=3.50 [m2K/W] -thickness 1400[mm], thermal resistance R=4.00 [m2K/W] -thickness 160[mm], thermal resistance R=5.00 [m2K/W] -thickness 200[mm],