R-21 Kraft Tabless Formaldehyde-Free Thermal & Acoustical Fiberglass Insulation Batts 15-1/4 in. x 105 in. x 5-1/2 in. (77.83 sq. ft.) | R21K-15.25105TL-JM

Johns Manville's R-21 Kraft Tabless Thermal & Acoustical Insulation Batts also offer excellent acoustic performance, helping to minimize sound transfer between rooms and floors. The Kraft facing serves as a vapor retarder, enhancing moisture management in building assemblies. With its combination of thermal and sound attenuation properties, this insulation supports energy-efficient and comfortable living spaces while adhering to industry standards for indoor air quality and performance.

• Tabless design allows for easier cutting, fitting, and installation in wall cavities
• Fiberglass composition resists sagging, rotting, and deterioration over time
• Kraft facing acts as a built-in vapor retarder for moisture control
• The insulation reduces sound transmission for improved acoustic comfort