Johns Manville Sound Control R-19 Unfaced Fiberglass Batt Insulation (Model AU396S). Dimensions: 24 x 96 inches, covering 144 square feet per package. Designed for interior wall applications where sound attenuation is a priority, this insulation also provides R-19 thermal resistance. Unfaced design is ideal for use between floors or interior partition walls. Item is in like-new, in-box condition with no damage or missing components. A quality product at a fraction of retail cost, supporting Bud's Warehouse mission to empower individuals rebuilding their lives.