We decided that it was too intrusive to have anyone install them-too many plants and not enough room-so I built and installed them myself. We selected a coated pvc mesh that is 50% open for filtered sunlight. Shades are royal blue-the major accent color in the garden. Supports are steel tube with stainless steel marine cable and hardware.
They are designed like kites, light members braced by thin strings.
The tall structure is a 2 story deck that we built about 10 years ago, but that’s another story.