3M™ Weather Resistant Film Tape 838, White, 47 in x 36 yd, 3.4 mil, 1 roll per case. 3M™ Weather Resistant Film Tape 838 is comprised of a strong, thin Tedlar® PVCF Film backing with a high shear strength and a solvent resistant acrylic adhesive. This tape is ideal for many long-term weather resistant and protection applications.