Review on 🔒 LLPT Aluminum Foil Tape 2 Inches x 108 Feet 5.9 Mil - Extra Thick HVAC Sealing Duct Tape for Pipe & Metal Repair - Strong Adhesive Hot Cold Air - AF208 by Shrikant Ojo

So if you have an HVAC unit that was built when they were mass producing luxury homes and selling at top prices, or if you've been dwindling or over the course a misalignment over time or a gap that has never properly closed, this material is perfect. It's easy to cut, peel off the backing and place. I don't know if closing some of the gaps and gaps will do anything noticeable, but this stuff is very easy to work with and it won't hurt.