AT-A-GLANCE Loose-leaf Desk Calendar Base for 3.5 x 6 Inch Page Size, Black (E17-00) Classic yet contemporary black base holds standard calendar refills up to a 3.5 x 6 or maximum 6.5 inch page size Black base is made of high-impact molded plastic and is recyclable; two ring binding; base overall size is 7.5 x 8.75 x 1 inches Holds standard 17-style calendar refills (E717 50, E517 50, E417 50, S170 50, E017 50, E717T 50, and E717R 50), sold separately