These category film inserts are System II Ames compatible and can be used to index within a master radiology jacket.  With 18 category types that are each outlined with a solid color, and many containing illustrations on the back, it's easy to indentify individual categories and makes for effective organization.  Measuring 17-1/2" W x 14-1/4" H, these System II Ames compatible category insert jackets feature an open end for film and are made with 28# White Kraft.