Owens Corning PINK® Insulation is soft to the touch and easy to install. This collection of Fiberglass Insulation delivers comfort by helping homes stay cooler in the summer and warmer in the winter. A well-insulated home can save up to 15% on heating and cooling costs while providing exceptional sound control performance. We recommend using R13 and R15 insulation rolls and batts for your 2x4 wall project.