Johns Manville (JM) R-38 Unfaced Fiberglass Batt Insulation, 16 in x 48 in, 42.66 sq ft Bathroom Wall Surround Perfect for intricate mechanical tasks

Perfect for intricate mechanical tasks

Q: What material is the backpack made from

The sinuous bands catch light beautifully

confident seal that feels intentional in cabinetry

Johns Manville (JM) R-38 Unfaced Fiberglass Batt Insulation, 16 in x 48 in, 42.66 sq ft Bathroom Wall Surround Perfect for intricate mechanical tasksR 38 Unfaced Fiberglass Batt Insulation (16 in x 48 in) JM (Johns Manville) R 38 unfaced fiberglass batts are pre cut for 16 in on center wood framing to help improve thermal performance and add sound control in attics, ceilings, and floors. Unfaced construction has no vapor barrier, making it suitable for adding over existing insulation where permitted. Key Features: High R Value Performance: R 38 fiberglass batts help reduce heat transfer for