Sheer Descent Weirs are ideal when a formal appearance is desired. These weirs create a beautiful sheet-flow waterfall and can be used inside or outdoors. The Stainless Sheer Descent Weir is 23" wide, includes a 1" FPT inlet and requires a minimum of 1,600 gal/hr. 23.62"W x 4.57"D x 3.13"H