From Starbounder - Starbound Wiki
It has 24 storage slots and is not stackable.
|Is there anything the Floran don't decorate with bones?
|I can't imagine a Floran writing a book.
|Floran don't read bookss. Only Greenfinger use bookcase.
|Observant. This bookcase has not been touched in a long time.
|The Floran don't appear to be heavy readers.
|The Floran seem to incorporate death into every item, even this bookcase.
|I never had the Floran down as big readers. I'm surprised they'd need a bookcase.