Overall quality = 5 stars
Assembly instructions = -1 star
Ease of assembly = 2.5 stars
Customer support = 5 stars
After a lot of research we decided to give the roll-formed structures a try now that it's up, I'm glad I did, BUT
Keep in mind these are non-engineered structures that require quite a bit of fabrication (cuts and adjustments) as you go along.
It is NOT a husband/wife DIY weekend project!
Be sure to ware good cut proof gloves, because the arches and purlins are VERY SHARP, quite flimsy, and very hard to work with, until the purlins get attached and properly tightened.
You'll need a minimum of 3 people to erect this structure and at least 4 to install the plastic.
The included instruction manual is all but worthless and there were no part numbers on any of the steel parts.
With all of that said, once the structure is finally up and properly secured, it is much stronger and more secure than the round pipes found on traditional greenhouses.
Five stars to Greenhouse Megastore's customer serves, it is OUTSTANDING, and they are very prompt with replies to emails and phone questions.
I will likely buy another one at some point, but next time I will budget to have it professionally installed.