Johns Manville R21 103.97-Sq ft Unfaced Fiberglass Batt Insulation Wit

For use in 2x6 wood-framed walls floors and crawl spaces. Batts are pre-cut for use in standard 8-ft walls with 24-in on-center stud spacing. Unfacedwithout a vapor retarder can be added to existing insulation. Improves energy efficiency and provides sound control. JMs bio-based binder is mostly made from rapidly renewable plant-based materials satisfying increased demand for agriculturally-sourced products. JM is a partner of the Seal and Insulate with ENERGY STAR program. SCS Recycled Content certification. GREENGUARD Gold Certified for office indoor air quality and SCS Certified for home indoor air quality.