I looked into the price of plastic panels - like they have on big greenhouses - mucho expensivo!!
Home Depot and Lowes have them. An 8' panel is about $15-16. They also come in longer lengths. They're not quite 24" wide, but I buy them when I can and just add it to my run, replacing metal panels.
I hope to use metal panels over the top of my hoop and put a ventilation cupola on.
HD website shows a 26" x 8' panel for $14.48. Another is $21.62. Not sure which is see through clear or just light filtering clear.
You can check Lowes web site for pricing there..