PlastiSpan Type 1 R13.125

PlastiSpan Type 1 Rigid Insulation - 4' X 8' X 3 1/2" (R13.125) is a type of foam insulation board made from expanded polystyrene (EPS) that is commonly used for insulating walls, floors, and roofs in residential and commercial construction.

This particular product is 4 feet by 8 feet in size and 3 1/2 inches thick, with an R-value of 13.125. The R-value is a measure of the insulation's resistance to heat flow, with higher R-values indicating better insulation performance.