R28 7-1/4x15-1/4x47 CAN

Designed to help delay the spread of fire, Johns Manville Mineral Wool TempControl® Batts offer thermal control for wood-stud cavities of exterior walls, basements and heated crawlspaces.

JM mineral wool batts are made of inorganic fibres derived from basalt, a volcanic rock, and are enhanced with glass fibres. Advanced manufacturing technology ensures consistent product quality, with high-fibre density and low shot content for excellent performance. JM mineral wool batts are inorganic, noncombustible, moisture resistant, non-deteriorating, and will not mildew or support corrosion.Designed to help delay the spread of fire, Johns Manville Mineral Wool TempControl® Batts offer thermal control for wood-stud cavities of exterior walls, basements and heated crawlspaces.