A furniture assembly (1; 101) comprising: - an upper module (3; 103); - a lower module (5; 105); and - a wall part (7; 107) which is arranged for being provided between the upper and the lower module when the furniture assembly (1; 101) is mounted in a room in a mounting position with the upper module (3; 103) provided above the lower module (5; 105), wherein the wall part (7; 107) is reaching between a lower side of a backside (13; 113) of the upper module (3; 103) and an upper side of a backside (15; 115) of the lower module (5; 105) when the furniture assembly (1; 101) is in the mounting position wherein the wall part (7; 107) is pre-mounted to either the upper or the lower module (3; 105) and not mounted to the other one of the upper or the lower module (5; 103) such that it can be slid in relation to the one of the upper or lower module (5; 103) to which it is not pre-mounted into a delivery position where the upper and lower modules (3, 5; 103, 105) are provided closer to each other and the wall part (7; 107) is covering a part of a backside (15; 113) of the one of the upper or lower module (5; 103) to which it is not pre-mounted and into a mounting position in which the wall part (7; 107) is connecting a backside (13; 113) of the upper module (3; 103) with a backside (15; 115) of the lower module (5; 105), wherein the wall part (7; 107) is a splash board of tiles, glass, plastic, stone or metal and is provided onto a projecting part (21; 121) of a board (19; 119) which is mounted to a backside (13; 115) of the upper module or the lower module, said board (19; 119) being mounted such that the projecting part (21; 121) of the board (19; 119) projects from the backside (13; 115) of the upper or lower module, wherein the projecting part of the board has substantially the same size as the wall part. - an upper module (3; 103); - a lower module (5; 105); and - a wall part (7; 107) which is arranged for being provided between the upper and the lower module when the furniture assembly (1; 101) is mounted in a room in a mounting position with the upper module (3; 103) provided above the lower module (5; 105), wherein the wall part (7; 107) is reaching between a lower side of a backside (13; 113) of the upper module (3; 103) and an upper side of a backside (15; 115) of the lower module (5; 105) when the furniture assembly (1; 101) is in the mounting position wherein the wall part (7; 107) is pre-mounted to either the upper or the lower module (3; 105) and not mounted to the other one of the upper or the lower module (5; 103) such that it can be slid in relation to the one of the upper or lower module (5; 103) to which it is not pre-mounted into a delivery position where the upper and lower modules (3, 5; 103, 105) are provided closer to each other and the wall part (7; 107) is covering a part of a backside (15; 113) of the one of the upper or lower module (5; 103) to which it is not pre-mounted and into a mounting position in which the wall part (7; 107) is connecting a backside (13; 113) of the upper module (3; 103) with a backside (15; 115) of the lower module (5; 105), wherein the wall part (7; 107) is a splash board of tiles, glass, plastic, stone or metal and is provided onto a projecting part (21; 121) of a board (19; 119) which is mounted to a backside (13; 115) of the upper module or the lower module, said board (19; 119) being mounted such that the projecting part (21; 121) of the board (19; 119) projects from the backside (13; 115) of the upper or lower module, wherein the projecting part of the board has substantially the same size as the wall part.