We have 13 ft. 3 in. Round Mat with 96 Rings. Frame should be 15ft. with Product Detail Your Frame size should be: 15ft Octagon. You should have 8.5 inch springs. . The "13 ft. 3 in. Round Mat with 96 Rings. Frame should be 15ft." is best product for you. We recommended 13 ft. 3 in. Round Mat with 96 Rings. Frame should be 15ft.