I am looking for a cardboard sheet that is two inches thick, approximately. Do yo carry something llike this or know who might?
That sounds like something that would be outside of what we do and I can’t say that I know of anyone who would do something like this. I have seen pallets constructed of corrugated carboard where the components are punched out of thick board, but even these are individual thinner sheets glued together. If it is possible it would be in such a fashion. Another possibility would be honeycell. Knowing what you are trying to accomplish would help in answering your question.