I installed our HF 6 x 8 green house back in september 2014 following this guide.. https://www.instructables.com/Building-and-Improving-the-Harbor-Freight-6×8-Gree/. The original panels exposed to the sun were covered with 6mm UV rated plastic. All of the original panels are still in place except for 5 of the roof panels which finally gave out this spring of 2024! [...]