Flat Roof panel installs are custom, there are several suppliers and methods to select from. The ideal angle is very steep in cold climates, and never less than 15-degrees to allow water/snow to run off and avoid ice build up. Allow more than a month to order custom hardware.
The one we see most often is the concrete block "Ballasted" install that does not penetrate the membrane to avoid leaks.
This is a 6 panel SP3.0 in Victoria. We designed these S/S feet and fabricated in Victoria.
This is a Whistler Passive House on Alta Lake. The minimum angle is 15-degrees, and should never be lower.
SunPump can supply 316L Stainless Steel feet machined like the top picture for a reasonable cost. This is all custom work that should involve a professional in design and engineering when you are not buying a standard version.