THICKNESS | Nominal 3″**, 4″, 5″, 6″, 7″, 8″ | 2″, 2.5″, 3″, 4″, 5″, 6″ | 1.5″, 2″, 2.5″, 3″, 4″, 5″, 6″ Rib height not included in thickness |
MEAN TEMP|R-VALUE (h-ft²-°F/BTU) | 4″ | 15.29 5″ | 18.90 6″ | 22.51 7″ | 26.12 8″ | 29.73 | 2″ | 16.67 2.5″ | 20.41 3″ | 24.15 4″ | 31.45 5″ | 38.91 6″ | 46.08 | 1.5″ | 12.77 2″ | 16.61 2.5″ | 20.37 3″ | 24.15 4″ | 30.67 5″ | 37.31 6″ | 44.05 |