The markilux 77x/87x range is mounted on glass canopies to give protection against the sun or to create a privacy screen. It also functions as a window blind for very large areas. The system comes with a round or rectangular fabric cassette with a range of frame colours and types of fabric. Furthermore, a lighting system is integrated. Special gas piston modules keep the fabric continuously under a high tension, making it more stable in windy conditions and adding a feature to serve as noise protection. The manufacturer-specific tracfix system gives the unit a neat appearance.