Classic Museum Frame with Backing StrainerThe Classic Museum Frame is designed for that already matted print or photograph you bought at the art fair and is sitting in your closet. Its also perfect for any artist who wants to have the option to switch pieces in and out easily! Simply remove the countersunk screws and backing strainer: take out the cardboard and backing board and replace it with your matted art. These frames are also great for documents or as a display frame. For artists