2.5-inch Type 4 XPS Rigid Insulation 2-ft x 8-ft stone wool Non-combustible with a melting point

Non-combustible with a melting point of approximately 1177°C (2150°F)

For: 2"x8" walls with 24" on-center stud spacing

It is especially useful when superior fire resistance and acoustical performance are required

Big Stretch is a high-quality

2.5-inch Type 4 XPS Rigid Insulation 2-ft x 8-ft stone wool Non-combustible with a melting pointDupont Styrofoam Type 4 XPS Rigid Insulation 2. 5 inch x 2 ft x 8 ft. R Value of 12. Compressive strength of 30 psi. 8 sheets per bundle. DuPont Styrofoam Brand SM30 Extruded Polystyrene Foam Insulation is ideal for use in foundations, floor slabs, attics and crawlspaces, where it resists water pickup a characteristic that allows it to maintain its high R value.