3M™ Filament Reinforced Electrical Tape 1339, 23 in x 60 yd (58.4 cm x 58.8 m), logroll 1 side trimmed. 3M™ Filament Tape 1339 is a conformable, solvent resistant, high temperature filament tape with acrylic adhesive. Designed for applications needing both the dielectric strength of polyester film and the high mechanical strength of glass fibers.