An output unit of a refrigeration device having a niche with a rear wall, which is provided with a cover, and a method of installing the output unit. The cover includes a dish-shaped section, which is curved inward into the niche and bounded by opposite edge sections, which are connected with a niche frame. In an exemplary embodiment of the invention, the edge sections at front supporting surfaces of the niche frame are held in contact in an installation end position, wherein the dish-shaped section is pulled by fastening means against the rear wall of the niche. By these means, it is ensured that the narrowest or most uniform gap possible between the cover and the place of installation is guaranteed and, in addition, fastening means are not visible to the user.