You guys have a Denco out there, right? R-tape guy came by with our account rep this spring.
They also carry AWT's chem tape, it's actually a hair thicker than the polyken, but otherwise very similar.
Be careful with the 3" if you try it--if there's a lot of width on the free mesh, the glue could get through well enough to adhere to your exposure blanket. Not too much fun.