OC R-19 6.25" x 23" - 39'-2" KRAFT FACED INSUL ROLL 75.07-SQFT | R-19 Fiberglass Kraft Faced Roll
6-1/4" x 23" x 39'-2"
75.07 Square foot per roll
"R'' stands for resistance to heat flow. The higher the R-value the greater the insulating power.