Great cage - a little flimsy
I use this cage to contain my two male rats. It seemed complicated to put together at first, but there's a video on YouTube that shows you exactly what to do. Putting the panels on was quite simple, though the corner pieces kept sliding off as I was doing it.
As for how good it is as a cage, my boys are completely secure despite the flimsiness of the build. There's no escape routes, it's nice and big so it's great for their enrichment and can fit up to 3 male rats inside. Would recommend