This is a 147"" diameter replacement trampoline mat which is designed for 14 feet frame trampolines, This trampoline mat is made from heavy duty permatron, and has 72 steel rings around it, so your trampoline should use 72 springs, and your trampoline frame should have 72 spring holes in it, This trampoline mat can fit JumpKing trampoline models 1410, JK14TR12-7205, 1411TB, 1408-TB, and older Bounce Pro models - pre 2007, and really any trampoline as long as the trampoline has a 14 feet round frame, and uses 72 springs, which each measure at 6, 5 or 7"", Save money and time by just replacing your old trampoline mat instead of buying an entirely new trampoline, This also fits some Leisure Kingdom, Orbounder and Sky Bouncer trampoline models, Mat Diameter Size: 147"", Mat Ring Count: 72, Mat Spring Size: 6, 5 or 7"", Mat Material: Permatron, Mat Color: Black, Compatible Trampoline:, Trampoline Size: 14feet, Trampoline Shape: Round, Dimensions: 12, 78x5x22, 5x10, 8 SKU: SPRT0042