JYYG Small Pet Pen Bunny Cage Dogs Playpen Indoor Out Door Animal Fence Puppy Guinea Pigs, Dwarf Rabbits PET-F (20 Panels, Black)

I got these panels for my newly acquired rabbit so that she could pretty much have free roam of the room. Shes pretty small and could jump over the edge when it was only one panel tall, so two is probably a minimum for all critters if using it like a fence. It is super simple to set up and super sturdy. Absolutely does the trick, no complaints.