12" JBT. Jumbo-size roll capacity is even more economical and easier to maintain than the junior size roll. Made with 2 3/4" core to fit all brands of tissue. Features keyed locking system. Construction: ABS plastic and polycarbonate. Dimensions: 15¬" h x 15 3/10" w x 5 5/16" d. Capacity: One 12-inch roll.