System II Ames compatible category film inserts are 12-1/2" W x 10-1/2" H and are designed for use within a master radiology jacket.  These jackets feature 4 categories to choose from, each printed with a solid color border on 28# White Kraft so you can find the film you need at a glance.  With an open end you can be sure your important films will stay secure in these System II Ames compatible category insert jackets and will not slide out of the master jacket.