Maybe you should check out the fancy rats UK forum. Most of their cages, for the same amount of rats are the size of mine or smaller.
Honestly, this is the second time I've posted pictures on this site and been lectured. The first time was for having an edible house. Did I know what it's ingredients were? Did I know that most of them come *unwrapped*? Oh, the horror.
Have some of you considered giving advice only when it's asked for? Otherwise, it's a bit heavy handed.
I have a basset hound and 3 cats. I've been a cat Mum for 25 years, and had dogs my whole life, but don't frequent sites for bassets and cats offering my unsolicited expert advice based on a digital image.
I live with my rats. They're happy, healthy and well adjusted. The can stand on their hind legs, they run, they play. They would have been snake food, had they not come to live with us in their little rat ghetto.