R-49 Unfaced Fiberglass Batt Insulation 13-1/2 in. x 16 in. x 48 in. (32 sq. ft.) (4 Per Master Pack) | R49U-1648-JM

Johns Manville unfaced batts and rolls effectively control heat flow to the outside and unwanted noise inside.

• For use in metal framed attics and ceilings
• Batts are pre-cut for use in standard 8-ft walls with 16-in on-center stud spacing
• Unfaced/without a vapor retarder - can be added to existing insulation
• Improves energy efficiency and provides sound control
• 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