Thermwell Products Frost King SP1/12 Construction Insulation, 48 in L, 16 in W, R3 R-Value, Steel $10.59EachMaterial: SteelLength: 48 InWidth: 16 InCoverage Area5.6 Sq-ftMaterialSteelLength48 In +3 more Width16 InThickness3/4 InR-ValueR3
