This company in Paramount has all the colors of shade cloth and a few different densities. The thing is, you can buy huge covers right off the shelf all the way down to 6 x 8. They also have a ton of the hardware to the point that you can pick and choose to assemble just about anything you need. I think they also sell large, large party tents. They are wholesale to the walk in public.
https://www.ptmtarps.com/