Standard size?

Quick question. How do I get a report showing what in my inventory the system deems to be standard or oversized inventory?
Also when looking at a specific item is this information marked anywhere?

I can work from the dimensions I know but I have a great deal of inventory and have been heavily penalised on the standard size inventory storage amount. I think they may have either changed to dims or miss read the item etc.

So I need a way of seeing what they think it is rather than using logic.

thank you for any help