bounce pro 14' round trampoline vertical leg extension (6a) bounce pro keep your trampoline in the best working condition by replacing your vertical leg extension. the bounce pro 14' round trampoline vertical leg extension is part of the leg frame assembly. bounce pro model: tr-14es-fsxt & tr-14es-fsxe. (trampoline & enclosure part list # tvl-14-38.1) part 6a. length: 21.5"