ABS 19 RACK CASES WITH TROLLEY The new PROEL Multiform 19 rack case line with trolley has been developed to allow easy transport of ones professional 19 rack gear. Thanks to its retractable ABS handle featuring two preset positions, and to two 40 mm (1.57 in) built-in casters, these new Multiform trolleys can be easily moved without fatigue, even at full load, and placed flat without any stability problems. As its trolley system is completely recessed inside the structure, stacking capability is not effected. This allows two further 19 rack unit spaces, with 1/3 depth, at the base of the ABS system (ideal for low-profile instruments).