R-38 insulation is best used for application in attics & cathedral ceilings

Each R-38 fiberglass insulation batt is 12 in. D x 24 in. W x 48 in. L

Every order of 8 bags contains 512 sq. ft. coverage of R-38 insulation where each individual bag covers 64 sq. ft.

The R-38 R-value improves personal comfort in your home or office

R-38 insulation has high-quality materials made of resilient fibers for more energy efficiency and is Energy Star rated

Installation made fast and easy using pre-cut， softer to the touch insulation that has durable kraft facing marked in 1 ft. increments with stapling flange where cutting and splitting is simple with low dust

R-38 insulation compression packaging fits more product in every bag and is designed to last the life of the structure

Knauf fiberglass insulation provides superior thermal and sound control perfomance that improves comfort， privacy and productivity

Kraft vapor retarder helps prevent water vapor from condensing to liquid water within the cavity and has a vapor transmission (permeance) rating of 1.0 or less. Kraft facing will burn and should not be left exposed

Reduces heating and cooling bill by preventing outside air from entering and keeping controlled air inside

Fiberglass insulation minimizes insect intrusions by covering areas of entry

All Knauf fiberglass insulation is GREENGUARD Gold certified， free of red list chemicals and formaldehyde

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