Hi. A pig pannel is 20' x 5' with 2" spacing alone the bottom an 8" after 2' or so. It's used to pen pigs up. Cattle panels have 8" spacing the entire length. I just cut up old ones or scrap. I bought an old farm so I have junkI've also used dog kennel panels. Any stiff squared mesh will work. Just cut to length. I use wire (scrap electric fence) to secure the dome to the grid. I have used safety wire, pop rivets, an hot glue to secure the grid to the screen top.
Something like this without the dip:
https://www.amazon.com/Black-Panel-S...8761305&sr=8-1
If it wasn't for the lockdown you could find a grid for .25 at Good Will or a yard sale.
One friends that's OCD saw the panel my kid uses over the turtle tank. She had to tig clips onto the screen frame, grind the panel perfect an powder coat everything. My 8yo asked me if the turtles caredShe thanked my friend but won't let her see her snake set ups.
Small pig panel, you don't need it. I just have them.
https://www.tractorsupply.com/tsc/pr...ft-l-x-34-in-h
Good luck!