<p>Sliding door comprises parts of a sliding door drive (3) and parts of an additional mechanism (10) for actuating an adjusting part assembled on a module support (1) which can be disposed on and fixed to the sliding door together with the parts pre-assembled on it. Preferred Features: A motor (31) and/or gearing elements (3a, 3b, 32) of the sliding door drive are preassembled on the module support. The components of the additional mechanism arranged on the module support transfer forces to the adjusting mechanism.</p>
