This tape is UL723 listed, but this is a plain foil tape, there is no printing on this tape. Venture Tape 3520CW COLD WEATHER FOIL is a 2.0 mil (50 micron) annealed aluminum foil coated with Venture's CW cold weather solvent acrylic pressure sensitive adhesive. The malleable foil applies easily to both fibrous and sheet metal ducts and conforms to irregular surfaces. Venture Tape 3520CW excels in demanding temperature and humidity applications and provides superior performance and durability over a wide range of environmental conditions.