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