Checked Out the Product Folder?

Hi Everyone,

I created one product folder and put the all necessary documents (i.e CADDocuments, WTDocuments, other non CAD Documents etc.) in that folder.

is it possible to checked out the whole product folder? i am selecting the folder and try to check out by selecting the action menu then i get the error "Only CAD Documents and parts are eligible for multi object checkout". is it possible to  check out the whole product Folder.