Likewise for their duct tape line. I use the "Outdoor Tough" version which is more of a charcoal color than the traditional silver.

The packaging has a couple of little bar charts indicating "strength" and one for "weatherability". 3M rates this tape as #5 out of 6 for both.

I originally bought several rolls at Lowes, although now I don't see it listed on their website (or even on 3M's website) so perhaps it has been discountinued. It wasn't too pricey (around $8.00 for a 55 yard roll) and seems very well made.

Jim