NP800126 adjustable plyometric box Vary height, Vary intensity! Platform quickly adjusts to a 14", 16", 18", or 20" NP800126adjustable plyometric boxVary height, Vary ... intensity! Platform quickly adjusts to a 14", 16", 18", or 20" height to train a wide range of athletes. Maximize explosive ... x 20" W (platform), 28" L x 28" W (base). adjustable plyometric box