R-21F Foil Formaldehyde-Free Thermal & Acoustical Fiberglass Insulation 5-1/2 in. x 16 in. x 96 in. (74.66 sq. ft.) | R21F-1696-JM

Johns Manville's R-21F Foil Thermal & Acoustical Fiberglass Insulation 16 in. x 96 in. also enhances interior comfort by reducing airborne sound transmission between conditioned and unconditioned spaces. The noncombustible fiberglass construction supports fire safety requirements and resists mold growth when kept dry. Easy to handle and install, these batts help meet energy code standards while contributing to lower heating and cooling costs. With 74.66 sq. ft. of coverage per bundle, this insulation provides dependable performance for residential and light commercial construction projects.

• Foil facing functions as a vapor retarder and reflective radiant barrier
• Designed for standard 16 in. on-center framing.
• The fiberglass material provides both thermal insulation and sound attenuation.
• The insulation is noncombustible and suitable for code-compliant construction.
• Provides effective resistance to heat transfer