This is a cage platform suitable for rats or hamsters.

The platforms use an M12 thread and bolt for holding it to the cage. Once tightened the platform stays rigid and can support even a fatty ratty. The cage its been used on is the Savic Royale 95, which is very similar to the critter nation cage.

Please check your cage dimensions before printing and compare the dimensions posted in images.

I have printed these in PLA but I think PETG would be more suitable due the nut&bolt.