midwest homes for pets critter nation by midwest double unit small animal cage | habitat for rats, chinchillas, ferrets & sugar gliders, tool-free assembly, full-width doors, shelves & removable base pans black: 1/2 inch wire spacing: critter nation double story is up for auction in Pet Supplies. The current bid is $106.00, 68% below the $329.99 MSRP, in Good Condition. Bid on this item at our Cincinnati - School Road location before the auction closes.