Another part of my service is building AC Covers ( For the Outside unit )
The frame is made with Aluminum And upve lattice work.
Be Aware that there is a cheaper option for the lattice work, but I would never use it, as its not strong and with time it comes unglued and falls apart.
Its a case of you get what you pay for. You want cheep you can get cheep but it will not last.
My Ac Covers are a bit dearer as I only use the materials that will not deteriorate with the changing temperatures we have here.
please see a couple of photos below