Dimensions: -60×40cm. -corner size 6cm (two chamfered corners; other corners straight). Thickness: -nominal thickness 4mm. Size tolerance: -on length and width +3/-3mm; -on thickness +1/-0.4mm. Volume measure 1850kg/m3 (min. 1750). Water absorption (*) 15%. Fracture bending stress: -parallel to the fibres 16N/mm2; -perpendicular to the fibers 25N/mm2; -everage bending moment 55Nm/m. Hygric expansion coefficient 3.3mm/m. Thermal expansion coefficient 10−6m/mK. Frost resistance: -continuous -30°C. Thermal conductivity coefficient λD 0.46W/m·K. Reaction to fire A2-s1,d0.