Material: heavy duty steel mesh with black or green powder coated, heavy duty solid galvanized steel mesh, and stainless steel mesh.

There are four installation styles of tomatoes trellis as following:

Vertically install, and need fence posts support it, let tomato plants climb along it (as figure 1).
Mounted horizontally as a rest bed to allow the plants to spread and crawl on the grid, tomato fruits hanging on the grid (as figure 2).
Two mesh panels constitute a stable triangle structure, mounted with posts will be more sturdy, it could support more plants (as figure 3).
Two wire mesh panels are parallelly vertical mounted and fixed by reinforcing bars, then connect them together with strong ropes. This structure is like two walls to support and protect the tomatoes between them (as figure 4).