I had a customer bring me an arcylic painting on a Fredrix 11 x 14 pre mounted canvas. She didn't want it float mounted, instead she insisted on a regular wood frame. Obvoiusly there won't be any glass, YES I sealed the rabbet. I am not quite sure if I sure mount it to a piece of Museum Rag, or if I sould leave it float. There is some info about the painting on the back. Any suggestions on how to handle this would be greatly appreciated.