It's a bit late in the OP's case now but I have seldom seen a RRB two blade easel correctly described on the U.K. e-bay in terms of its max print size. At times I'd swear that the sellers can't be familiar with the easels when they fail to notice how confusingly they have described the easel's size.

It is always worth asking the specific question about max print size then you have comeback if it arrives and doesn't comply with the answer to the question

It seems from this thread that it isn't just the U.K. e-bay that has the problem.