HomeAll ProductsScotch 27 & 69 Glass Cloth TapesWoven insulating glass cloth; high temperature resistance; high mechanical strength UL Recognized.Scotch 27 & 69Product Brands (optional)SelectProduct DesciptionTemp Rating:Tape Thickness:27 is Class B temp (130°C/266°F)27 is 7 mil69 is Class H temp (180°C/356°F)69 is7.5 mil