We used 1/2 inch, 19 gauge, black coated hardware cloth. It costs a bit more, but allows you to see inside/outside the coop/run easily. I guess it's because light isn't reflected.
We really like it - we can look from the house and see inside the run. It does need a good brush off with a broom 2 or 3 times per year - it does get dusty, lol!
We bought ours at Academy Fence Company. I tried the link to the product at their site, but it seems to be down. They still come up in a search, though. May be just an internet glitch presently. Here's the link if you want to try it:
https://www.academyfence.com/welded...sh/vinyl-coated/1/2in-x-1/2in-19-gauge-black/
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