ROCKWOOL ComfortBatt 3-1/2 in. x 15.25 in. x 47 in. R-13 Stone Wool Insulation (12-Pieces per pack)

ROCKWOOL ComfortBatt R13 Fire Resistant Thermal Home Insulation. Whether you are building new or renovating your home, use ROCKWOOL ComfortBatt Thermal Home Insulation in your exterior walls, attic, ceiling and floor frames for top thermal performance. With its high density, non-directional fiber structure and unique flexible edge, ROCKWOOL ComfortBatt is designed to deliver a better fit providing heating and cooling energy savings.