(1) Not all product sizes are available in all regions.
(2) R means resistance to heat flow. The higher the R-value or RSI (R-Value Système Internationale), the greater the insulating power. R-values are expressed in ft2• h•°F/Btu. RSI values are expressed in m2°C/W. R-value determined by ASTM C518.
(3) Vertical compressive strength is measured at 10% deformation or at yield, whichever occurs first.