The 20' x 16' Rectangle porch shade is a very functional and economical way to protect and shade your outdoor living areas. The sun shades for patios effectively reduce heat on your patio, backyard and other outdoor areas because they provide excellent protection from the sun and its harmful UV radiation. The pool shade is wonderfully versatile; they can be attached to homes, trees, patio columns or used with Outsunny's convenient Installation Pole (not included).