3M Venting Tape 394 White, 1 in x 36 yd 4.0 mil, Conveniently Packaged (Pack of 1) Features unique non-woven porous backing that has high air/gas permeability Meets most outgassing requirements for foam-in-place insulation processes Pressure sensitive adhesive holds strong to a wide variety of surfaces Includes fungicide for use in areas with high humidity Available in new convenient-sized packaging