Johns Manville R-15 Wall 34.8-sq ft Unfaced Mineral Wool Batt Insulation Multi-pack SS315S

Made for exterior walls to help keep homes warm in the summer and cool in the winter. Melting point of 2000F helps delay the spread of fire. Reduces noise traveling throughout the home. Easy to cut and install. Unfacedwithout a vapor retarder – can be added to existing insulation. For use in 2×4 wood-framed walls. JM is a partner of the Seal and Insulate with ENERGY STAR program. Batts are pre-cut for use in standard 8-ft walls with 16-in on-center stud spacing.