$62.99 Owens Corning® Foamular® R-3 Extruded Polystyrene Foam Board Insulation 1/2 x 4' x 8' at Menards®
Blue Board 1 1/2 x 4 x 8' - 7.5R Value - 25PSI | Basement insulation, Foam insulation board 
1/2 in x 4 ft x 8 ft DOW STYROFOAM Extruded Rigid Insulation Board at Colonial Materials
