ROCKWOOL RXCB351525 COMFORTBATT R15 3.5 In. X 15.25 In. X 47 In.
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About the ROCKWOOL RXCB351525 COMFORTBATT R15 3.5 In. X 15.25 In. X 47 In.
About 59.73 sq ft per bag. RXCB351525 is ROCKWOOL Comfortbatt® R-15 at 3.5 × 15.25 × 47 in.—the 16 in. o.c. wood-stud module ROCKWOOL lists as 15.25 in. × 47 in. on the USA TDS (05-2025). Semi-rigid stone wool with flexible long edges for cavity contact; noncombustible per ASTM E136 and 0/0 flame/smoke per ASTM E84 in manufacturer documentation. Use for nominal 2×4 walls where the energy path targets R-15 in the cavity layer.