It's a huge tank. Not sure on measurements. It's one PetsMart sells on a stand, it was a floor model that had damage to the stand and wasn't water tight. It was $50, I figured I'd use it for a hospital cage. I gave the boys the three spare wheels, some boxes, a few shelves, and 4 fleece squares as hammocks. Two water bottles, two food bowls. About half full with Carefresh and timothy hay. I need to get more toys, I know.
They seem ok in the tank, but they were in a 20 long. They race in circles, run in the wheels, and dig like fools.