Intex  2014-2015 Ultra Frame Pool Leg and Beam Joint Part 11449 For 15'x48",16&acute;X48", 18&acute;X48" Intex Part #11449 Post is 4 1/2" long and the diameter of all three openings is 1 3/4" measured from the outside edges. ***Spring Pins Included*** For Ultra Frame Pools Model Years 2014-2016