Floline Architectural Systems, LLC uses stainless steel bolts on their canopy systems.
Why use the more expensive stainless versus a carbon steel bolt? Because, we want the final product to last and look good for many years.
Unfortunately, some canopy manufacturers take shortcuts and use inferior products. A rusting canopy is the last thing you want hanging over your head. The picture below is NOT what you want on your building. (Paint adhesion failure is noticeable, too…but that is for another post.)