I recently bought this foil tape, but I only had the opportunity to use it today. I made a flexible air duct for a floor air conditioner to the window. I took it off last winter and put it back on now this spring. This foil tape worked great for my needs. An easy way to separate the foil from the backing paper is to fold a small corner back and forth and the paper will separate slightly from the foil along the edge of the fold line to make it easier to get started. Also when attaching at an angle (e.g. where a duct meets a window) I found it easier to bend the tape at an approximate angle before removing the backing. It may seem obvious to some, but not to me!
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