R-38 Unfaced Batt Insulation 10-1/4 in. x 24 in. x 48 in. (72 sq. ft.) (4 Per Master Pack) | R38U-2448-72-JM

Johns Manville formaldehyde-free unfaced thermal and acoustical insulation offers R-values up to R-49. It can be added to existing insulation in attics and ceilings. JM insulation is compression-packaged for space savings, and is offered in precut batts t

• Fiberglass batt insulation for use in wood-framed attics and ceilings
• Unfaced fiberglass batts do not have a vapor barrier and can be added to existing insulation
• Improves energy efficiency and provides sound control
• Batts are pre-cut for use in standard 8-ft walls with 24-in on-center stud spacing
• Simple to install, press in place between studs
• Will not rot, mildew or deteriorate and is noncorrosive to pipes, wiring and metal studs
• 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