A screened enclosure with a roof. A lanai typically offers removable panels to open up your space. Our Lania is an aluminum framed structure and is the next level in design for enclosing your patio area. A lania has many different design options that will allow your patio to be totally enclosed with screen. A Lania also has the option of being closed in with a polycarbonate water resistant roof system, as well as the option of enclosing the walls with a vinyl 4-track wind barrier.