Sto Insul-X is a rigid extruded polystyrene foam insulation board intended to be used as the continuous insulation component for StoEnergy Guard systems. The product is a 4-foot-by-8-foot board that is scored longitudinally on 16 and 24 inch centers, making it easy to size to commonly used widths beneath masonry veneer, and in full sheets beneath stucco, stone, and thin brick veneer. The product is available in three different thicknesses, and can be easily resized to ensure a perfect fit for any project.