Hi Jo - I hope this link works to what we use. They are apparently a pain to put together but they work great. Litters of kittens can ramble up and down all levels of the condo. If needed, the tray can be reversed to divide it in half as well.
** Link did not work - search on Amazon for Ferret Nation, model number 182
I’ll also try to post it from my laptop rather than my iPad, which is not cooperating! Hope this is helpful.
Kirsten Cianci, VMD
Palmetto Animal League
Ridgeland, SC 29936
=^..^=
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