I just ordered a case of 24 X 36 and a case of 24 X 18.

My smaller snakes are in Vision 221's (or whatever one is 22 X 24), so I'll just throw 2 in there and overlap them.

If it all works out I have 420 liners for my big cage and 420 liners for my small cage for 50.00 including shipping - not bad at all.