Pink Foam Board 1/2 Thick 6 Pieces-1sqft Each Foamular Insulation Boards for Craft, Diorama, Minatures, or Window, Wall Coverings. - Etsy UK
Owens Corning R-5, 1-in x 2-ft x 2-ft FOAMULAR Unfaced Foam Board Insulation in the Board Insulation department at Lowes.com
Owens Corning FOAMULAR 150 1-1/2 in. x 4 ft. x 8 ft. R-7.5 Scored Squared Edge Rigid Foam Board Insulation Sheathing 88WD - The Home Depot
Owens Corning Foamular 150 Rigid Foam Insulation, 1" T x 48" W x 8' L, R-5 Insulation Value, Scored with a Square Edge - 7791048 | Kuhlman Direct Online Store