Owens Corning FOAMULAR C-300 XPS Rigid Foam Insulation Board; 1-1/2-inch x 24-inch x 96-inch R-7.5 Ship Lap Edge
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Used under residential garage slab ( 30 psi), Moisture-resistant, Long-term thermal resistance, R-5 per inch of thickness, Minimum 20% recycled content, SCS Certified, GREENGUARD Gold certified for indoor air quality