3M Professional Grade 3340D Vent Sealing HVAC Tape 2.5-in x 30 Feet
Item #430936 |
Model #3340D
This item is no longer sold on Lowes.com
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
Permanent acrylic adhesive combined with the durable 2.0 mil backing provides long service life
General | |||
|---|---|---|---|
Color/Finish Family | Silver | Package Quantity | 1 |
Manufacturer Color/Finish | Silver | Grade | Professional |
Series Name | Professional Grade 3340D Vent Sealing | Use Location | Interior/Exterior |
Type | Vent Sealing Tape | Backing Type | Aluminum |
Dimensions | |||
|---|---|---|---|
Core Diameter (Inches) | 3 | Thickness | .09 |
Length | 30 | Thickness Unit of Measure | Millimeters |
Length Unit of Measurement | Feet | Width (Inches) | 2.5 |
Features | |||
|---|---|---|---|
Maximum Application Temp (Degrees F) | 300 | Minimum Application Temp (Degrees F) | 40 |
Maximum Service Temp (Degrees F) | 250 | Minimum Service Temp (Degrees F) | -40 |
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | No | ||
Warranty | |||
|---|---|---|---|
Warranty | None | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 31201500 | ||
Check out the Best Selling HVAC Foil Tape on Lowes.com
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this foil tape for its exceptional adhesive strength, particularly on metal surfaces under high heat, and its reliable performance in HVAC and dryer vent sealing applications. The powerful, long-lasting adhesive creates airtight seals that minimize leakage and conforms to irregular surfaces without lifting. Reviewers consistently note it outperforms standard duct tape and holds firmly even under stress. The heavy-duty construction and ease of application are frequently highlighted as key advantages. A few users mention the foil edges are sharp and require gloves, and some report occasional tearing during unrolling or edge lifting, but these concerns are rare and vastly outweighed by strong satisfaction.
Customer review summary generated by AI, including incentivized reviews.Incredibly smelly
It works pretty good for tanks, but the adhesive is so smelly, it cant be safe to breathe this in
From 3m.com
Works well, reminds me of really thick tin toil thats sticky.
Verified Purchaser
Sticks good
Yes
From Professional Grade 3340V Vent Sealing HVAC Tape 2.5-in x 30 Feet Verified Purchaser
the edge is sharp can cut
works great
From Professional Grade 3340V Vent Sealing HVAC Tape 2.5-in x 30 Feet Verified Purchaser
I need a refund on this
I did not revceive it. It was not on the truck when delivery came.
From Professional Grade 3340V Vent Sealing HVAC Tape 2.5-in x 30 Feet Verified Purchaser
Seems pretty good
Apparently didn't have any in stores near me, so it had to be shipped, works well enough. This vent sealing tape doesn't have the fiber reinforcement, but it adheres pretty good, and forms a pretty tight seal. I have no complaints.
Verified Purchaser
Nothing
I use this to seal between insulation I install on HVAC ducting
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We hope the seller was able to resolve this but if not please connect with us directly at 1-800-494-3552 M-F 8am-4:30pm CT. Thank you!