1/2 in. x 4 ft. x 8 ft. R-3.0 Styrofoam Residentail Sheathing Foam Insulation Board | FMX0.5-15-48SE-DUP

Dow's Styrofoam Square Edge Insulation has excellent insulating characteristics, high resistance to water and water vapor, exceptional compressive strength and long-term durability. The compressive strength of each board is 15 PSI.

• Square/butt edge
• Impact resistant
• Stable, long-term R-value
• Comprehensive strength: 25 PSI