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JOHNS MARVILLE R30 U1343 UNFACED FIBER/GLASS 16 INCHX48 INCH 58.66 SQUARE FEET/BAG
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Johns Manville Formaldehyde-free thermal and acoustical insulation for wood, engineered wood, and steel framing is made of long, resilient glass fi bers bonded with our bio-based binder. A wide range of thermal resistance is available to provide thermal control for both vertical and horizontal applications.