Owens Corning EcoTouch PINK FIBERGLAS Insulation (Specific for 2" by 4" WOOD framed walls with joists spaced 16" apart) R-Value: 14 Dimensions: 3½" x 15" Coverage: 78.3 sq. ft./bag Application: Walls PINK FIBERGLAS Insulation will keep you warm in winter and cool in summer and saves up to 20% in monthly heating and cooling costs! This formaldehyde-free, soft-to-the-touch insulation is non-combustible, eco-friendly and perfect for new installation or renovation projects. Data Sheet