Universal Transom Mounting Ext Shim used with Garelick Sport Dive LaddersSpecifications: W: 3.62" (9cm) H: 2.75" (7cm) D: 3" (7.5cm); Solid poly block that can be custom cut at the angle necessary to allow the ladder to be mounted at 15 degrees off vertical in special applications.; Used with stainless face plate included with ladder.;