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Johns Manville ComfortTherm R- 13 Wall Encapsulated Fiberglass Roll Insulation 40-sq ft 15-in W x 32-ft L) Individual Pack
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ComfortTherm® is wrapped in plastic for less itch and dust during installation
For use in 2 x 4 wood-framed walls
Rolls are designed for long, unobstructed spaces with 16-in on-center stud spacing
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