Have this Johns Manville R-38 Kraft Faced Fiberglass Insulation 16 O.C. for Wood Studs x 48 in delivered to your job site. Advanced fiber technology recovers without shaking or fluffing. Creates less dust-less mess and faster clean up. Safe, proven ingredients. Cost-effective solution for a more comfortable home. Absorbs noise for more peace and privacy. Insulation offers sound proofing benefits by helping to reduce unwanted noise. GreenGuard gold certified-contributes to indoor air quality. Wood and metal framed wall, floor and ceiling assemblies. Can be used in contact with concrete. Cannot be left exposed-must be covered by a 15-minute thermal barrier. Can be combined with FOAMULAR insulating sheathing to achieve greater R-value in exterior wall applications.