Little Giant Expander Rings?

[EnglishSpot2003]

Does anyone know where to get, or how to make expander rings for a Little Giant incubator?

 

[Oregon Blues]

I've seen them for sale at some of the mail order places that sell the incubators.

As for making your own, it would probably be easier to just move all the electronics to a taller Styrofoam box. perhaps and ice chest or shipping box.

 

[EnglishSpot2003]

I've looked all over the internet and can't find them. Am I calling them the right name?