Pipe Insulation Tape Backing Material FSK Overall Length 150 ft Overall Width 3 in Thickness 3.6 mil Color Silver Minimum Operating Temperature -31 Degrees F Maximum Operating Temperature 248 Degrees F Standards PSTC-101/ASTM D3330 PSTC-131/ASTM D3759 PSTC-133/ASTM D3652 PSTC-6/ASTM D3121 UL 723/ASTM E84 Adhesive Material Acrylic For Location Indoor Outdoor For Material Type Laminated Fiberglass For Use On HVAC Ductwork Elongation 3.5 Percent Flame Spread Index 25