Home > Shop > Drywall & Insulation > Insulation & Vapour Barrier > Halo & Poly ISO > 4x8x2" ENERFOIL POLY ISO INSULATION (R12) 4x8x2" ENERFOIL POLY ISO INSULATION (R12) Item #: 05094820 Mfr #: 2ISO $81.45 each Checking Inventory Add to Cart Overview: (R12)