E/O 12 In. X 15 Ft. Self-Stick Foam/Foil Duct Insulation por | ago 1, 2026E/O 12 In. X 15 Ft. Self-Stick Foam/Foil Duct Insulation. The Thermwell Products Co., Inc. 12 in. x 15 ft. Duct Insulation insulates both heating and air conditioning ducts. It is self-adhesive to make installation easy.
