Good quality, no issues with the instructions, just need patience and careful review of the pictures and youtube video. Took about 4-5 hours with an occasional helper.  Forgot to remove the white protective film on the bottom of the lexan panels, thought they were intended as a finish until I saw some wrinkles on the final panels. Had to remove and reinstall the panels, extra half hour or so  :( .   I did remove the clear film on the solar side.  Debating on whether the panels would need removal for winter snow load or could be covered/reinforced with fence boards and tarp.