Wiktionary
unframed
a. Not framed; not having a frame.
WordNet
unframed
adj. not provided with a frame; "unframed pictures" [ant: framed]
Usage examples of "unframed".
A sketch of the Heller house was tacked, unframed, on a long, blank wall.
Shelves and walls held drawings framed and unframed, along with what Simeon supposed ought to be called found objects.