
3M™ Metallized Flexible Duct Tape 3350 | 3M United States
18/4/2020· 3M Metallized Flexible Duct Tape 3350 is a 3.1 mil thick silver polypropylene tape with an aggressive acrylic adhesive used for sealing flexible ducts and connector systems. This tape meets the requirements of UL181B-FX and is used by commercial contractors