Bonded Acrylic Backing Foam Brand 3M carrier material black density 20 lbs/m3 diameter 14.9 inches industrial appliances, construction, industrial, specialty vehicles, transport length 36 linear code length (metric)32.91 m white liner thickness 3 mm liner paper product form rolled out in months shelf life (from date of manufacture)18 heat resistant-initial 250 F heat resistant long term 150 f thickness 125 mm thickness 3.1 mm (metric) width 0.25 in, 0.37 inches, 0.5 inches, 0.75 inches, 1 inch, 2 inches, 4.48 inches (metric) width 114 mm, 12.7 mm, 19.05 mm, 25.4 mm, 50.8 mm, 6.35 mm, 9.52 mm