Are Rubbermaid And Elfa The Same Rubbermaid Configurations Vs. Container Store Elfa?

Rubbermaid Configurations vs. Container Store Elfa? - are rubbermaid and elfa the same

Who knows if the ELFA shelving system is compatible with the system Confgurations Rubbermaid? Apparently, Rubbermaid is not your system in the branches in (at least I can not find them) and do not want to pay outrageous shipping costs, to get some tablets. Elfa shelves May instead of work?