installation 1 Preparing a pump basin o The sump pump must bs installed &1 a sun basin with 2 minimum disaster of 14 in. (356 mm} for vertical switch modals and 18 in, (457 mm) for tethered Out switch models. 0 The sump bask must have 3 minimum depth of 24 in. {610 mm} for vertical switch models and tethered Sot switch models. o The sump Darin oan Be constructed of le, concrete, stoat, or plastic. Che local cones for approved materials and for proper installation.