Owens Corning R-21 Thermafiber Fire and Sound Guard Plus 5.5" x 23" x 47" (16 Bags)Product Description: Enhance thermal efficiency, noise control, and fire resistance with Owens Corning R 21 Thermafiber Fire and Sound Guard Plus insulation. Perfect for both residential and light commercial construction, this mineral wool insulation offers versatility and reliability. It can be effectively used in interior and exterior walls, ceilings, basement walls, and crawl spaces. Its non combustible, moisture resistant, non corrosive, non
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Owens Corning R-21 Thermafiber Fire and Sound Guard Plus 5.5" x 23" x 47" (16 Bags)