I'm trying to express that a certain item's geometric design makes it difficult to shelf, which is why it is often hanged instead. But it is not however "unshelfable".
How can I say "difficult to" in this context? E.g.
As seen in this copy, the cover was usually perforated to be nailed or hanged to a wall due to its unique design, which made it difficult to shelf.
: to place on a shelf; shelve books