Ferret Nation shelves

[Dusty&Zia]

Hey everyone, I haven't been here in a while.

Here's a bit of an update:

Zia's perfectly healthy now (yay), and I've recently moved her into half of her Ferret Nation. The top half is blocked off (as in I shifted the pan so she can't get to the top), and I need some shelves! I know that going to Lowes or Home Depot would make wood be cheaper, but are there any websites selling chin shelves for the FN?

Thanks in advance!