Bravo / Airzone Trampoline Mat fits 13 ft. Frames that use 84 5.5 inch Springs (SPRINGS NOT INCLUDED) JUMPING MAT ONLY - SPRINGS NOT INCLUDED! Mat Size (Across): 139in V-Ring Quantity: 84 Compatible Spring Size (Springs Not Included): 5.5 in Compatible Trampoline Frame Size (Trampoline Not Included): 13 ft