Home > 3M Products > 3M Bonding Tapes > 3M Foil Tapes > 3M Foil Tape 3340


  • 2.0 mil aluminum foil backing is ideal as a vapor seal tape for duct closure.
  • Listed for both UL181A-P and UL181B-FX.
  • Replaces mechanical fasteners for rigid duct board.
  • Thermally conductive backing helps heating and cooling efficiency.
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