JM R-21 Unfaced Fiberglass Batt Insulation – 15 in x 105 in, 76.56 sq ft (2x6 Walls)

JM R-21 Unfaced Fiberglass Batt Insulation – 15 in x 105 in, 76.56 sq ft (2x6 Walls)R 21 Unfaced Fiberglass Wall Batts JM R 21 unfaced fiberglass batt insulation is designed to improve thermal performance and help reduce unwanted sound transfer in interior wall cavities. Pre cut batts fit standard 2x6 wood stud walls and can be added to existing insulation where no vapor retarder is desired. Key Features: Thermal + Sound Control: R 21 performance helps manage heat flow while also supporting sound control in wall cavities Unfaced