Sports hall luminaires must be high-quality and stable. The ABR is repeatedly tested for ball resistance. Its ball resistance certificate is issued by the Materials Testing Institute. ABR surface-mounted luminaires are designed for ceiling, suspended or rail installation. Various light deflectors with especially stable slatted grids and reinforcement rods are used, depending on the sports activity or hall construction. Ball-resistant prism lenses are also possible. The LED versions with RIDI-TUBES are especially efficient for continuous operation in sports halls.