R30 8-1/2 x 15 x 48" KF INSUL CATH 50 SQ. FT. | R-30 High Performance Fiberglass Kraft Faced Batts
8-1/4" x 15" x 48"
10-pcs. per bundle
50-Sq. Ft. per bundle
"R'' stands for resistance to heat flow. The higher the R-value the greater the insulating power.