【Wide Applications】Aluminum tape is suitable for sealing and patching HVAC duct system, duct pipe insulation, sealing aluminum, sealing hot and cold air ducts, dryer vents, stainless steel and plastic joints/joints, temporary repair of metal surfaces, fixing hose and copper pipe, etc. Aluminum tape is suitable for smooth flat and irregular surfaces. 【Strong Adhesion】Our metal duct tape is made of high quality pressure sensitive adhesives. Stronger sticking, easier tearing, leave no trace without residual glue. Provide you with excellent adhesion and stability under low and high temperature conditions (long-term temperature resistance: 120℃, short-term temperature resistance: 350℃). 【3.9mil Thick Aluminum Foil Tape】If the HVAC duct tape is too thin, it will break easily, and if it is too thick, it will be difficult to fit the pipe surface. The aluminum tape of 3.9mil thickness is moderate and perfect for use. So our 3.9mil foil tape is not easy to break, high quality and affordable. It's easy to separate, just rip it apart lightly. Better insulation and more tear resistance. The aluminum tape itself does not wrinkle and curl, making it easier to work and saving you time. 【Premium Foil Tape】Good waterproof performance, UV resistance, moisture resistance, corrosion resistance, anti-aging, insulation, flame retardant. Performs well in any type of weather! This aluminum tape is your best choice. 【Package Included】You will get 6 rolls aluminum foil tape. Dimensions: 2 inches wide, 65 feet long and 3.9 mil thick. If you have any questions about our aluminum tapes, please feel free to contact us. We will get back to you within 24 hours. 3.9 mil foil tape is moderately thick. Strong adhesive, but residue-free after removal. Suitable for seal or repair all kinds of ducts, smoke pipes, exhaust pipes and vents. Aluminum foil tape also serves as a good barrier against dust, moisture, smoke, odor, and many chemicals. Thicker hvac tape for ducts, easier peel off backing paper and not easy crinkled and curled on itself. Used in electronic products, wrapping electronic products for shielding radiation to prevent interference. Foil tapes are also used for shielding EMI and RFI, eliminating interference, repairing reflective insulation, repairing sheet metal, and many other industrial and automotive applications. Industrial grade material, high quality, high tensile strength aluminum foil, epoxy coated, strong cold solvent resistant acrylic adhesive set on easy peel silicone paper backing to protect the adhesive and provide ease of use. Silver finish tape is processed from pure aluminum and adhesive, thicker foil and sticky adhesive support more strength. Extremely high tensile strength and stability. 3.9 mil thick professional foil tape is more robust, provides better insulation, and has a stronger adhesive. Flame retardant, moisture-proof, temperature-resistant, anti-interference, thermal conductivity, anti-corrosion, heat reflection. Perfect for indoor and outdoor use. Aluminum foil tape has super adhesion, insulation, sealing and tear resistant design. Heavy duty tape is easy to tear by hand without the need for additional tools. The aluminum foil backing will create an airtight and watertight seal to prevent water leaks. This high quality self-adhesive foil duct tape is ideal for joining and sealing insulation, duct wrapping, repairs and pipework. Suitable for repairing, sealing hot and cold air ducts, duct insulation systems, sealing aluminium, stainless steel and plastic seams/joints, temporary restoration of metal surfaces, copper pipe fixing, etc. Duct tape can be easily applied to most surfaces suc