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This is a single roll of Knauf Next Gen fiberglass insulation, R-19, faced with kraft paper that acts as a vapor retarder. It is 15 inches wide, 6.25 inches thick and 39.2 feet long, covering about 49 square feet, and is meant for exterior wall cavities. The kraft facing staples to studs and carries the vapor barrier, so no separate poly is needed on 2x6 walls. It is formaldehyde-free and Energy Star certified, which sets it apart from older binder-heavy batts. R-19 is the common choice for 2x6 exterior walls in mixed and cold climates; rivals in the same class are unfaced rolls that need a separate vapor barrier or higher-density batts that cost more per square foot.
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This Knauf Next Gen insulation is a fiberglass roll with a kraft paper facing. It has an R-value of R-19 and is made without formaldehyde.
The kraft facing acts as a vapor retardant. The roll is intended for use in exterior walls. It measures 15 inches wide, 39.2 feet long and 6.25 inches thick, and covers 48.96 sq. ft.
