Have had this cage a few months now and it's shocking. It's so poorly made, there are 2 small side doors either end of the cages that are not secure at all, my rats have escaped countless times as they can open it themselves with a simple push. Have cable tied it but after a while they soon work out that chewing the cable will open it up again. The quality of the cage is shocking for what I paid. Really don't recommend this cage.
Great cages and easily assembled, I have 3 rats in each section with loads of room. I am not keen on the grating bottom but will put down some cardboard to stop the rats getting their feet caught.