Johns Manville Fiberglass Insulation R-20 23" x 47" x 6"; 120.12 sq.ft

15-inch x 47-inch x 6-inch; 78.34 sq.ft

Johns Manville Formaldehyde-free™ fiberglass insulation provides thermal and accoustical control for both vertical and horizontal applications. Fiberglass insulation is available in a wide range of thermal resistance R-values and is available unfaced or with a variety of facings, including kraft or foil.