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R- 19 Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

Owens Corning R- 19 Kraft faced Fiberglass Roll Insulation 48.96-sq ft ( 15-in W x 39.2-ft L ) Individual pack

4.7
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How is it R3 per inch yet in 5.5 in wall you can get R19?


Hello, the product referenced in your inquiry (Owens Corning EcoTouch R-19 48.96-sq ft Unfaced Fiberglass Roll Insulation with Sound Barrier) is 6.25" thick and has an R-19 value - which is 3.04 R-value per inch. Thank you for your inquiry!

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