... roll432 ft2216 ft2216 ft2216 ft2Net mass of saturated felt,min560 g/m21270g/m2400g/m2660g/m2Saturation,%by wt., min120%150%100%120 ... +/- 0,4 NMoisture vapour transfer rate6,61 g/m²/h8,41 g/m²/h5,12 g/m²/h5,12 g/m²/hTensile203,8 +/- 71,3 N114,7 +/- 22 ... ,4 N133,9 +/- 59,5 N133,9 +/- 59,5 NMass350,6 +/- 8,8 g ...