<p>The cabinet body (1) has two side panels (2) arranged at a distance to each other and are fixed at a rear wall (3). The side panels are formed as lightweight building board with two outer cover plates (4,5) and a spacer (6), where a vertical shoulder (10), made up of plastic, is fixed at the side panel. The rear wall rests at the vertical shoulder that has a flexible lip (13) for locking the rear wall.</p>