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R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

Perma "R" Products R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

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Foam consistency: I was curious if this is a solid piece of foam or if its comprised of the small styrofoam pellets that have been compressed togethe