nor illustrated in detail in the same display space 130 at least two display areas having predetermined different climatic conditions from each other are provided in particular in the example of the illustrated showcase 110 two display areas 130 a and 130 b are provided the two areas 130 a and 130 b are not separated from each other by any wall channel or the like thus they are solely differentiated by the presence of different climatic therein these climatic conditions different from each other in the different display areas 130 a and 130 b comprise different relative humidity and or different temperature conditions the delivery and return openings comprise area specific delivery 141 a 141 b and return 142 a 142 b openings of the conditioned air the area specific delivery openings 141 a 141 b receive from the treatment path 140 area specific conditioned air having the predetermined specific climatic conditions for the display area 130 a or 130 b for such purpose also the treatment path 140 is evidently doubled into two treatment paths 140 a 140 b each specific for the respective display area 130 a 130 b the area specific delivery openings 141 a 141 b are distributed uniformly on a first wall 151 a 151 b of the showcase 110 facing the display area 130 a 130 b and the area specific return openings 142 a 142 b are distributed uniformly on a second wall 152 a 152 b of the showcase 110 facing the display area 130 a 130 b and opposite to the first wall 151.