Abstract: The invention relates to a distribution cabinet (1) for communications and data technology, comprising a rack (2), at least one roof module (30), side walls (32), at least one rear wall (31) and at least one door (33) being fastened on the rack (2), the rack (2) having vertical struts (3) and lower and upper horizontal struts (8-11, 4-7), the roof module (30) being fastened on the upper horizontal struts (4-7), at least one side wall, a rear wall and/or a door being in the form of a double wall (31-33), an air flow being capable of flowing in the double wall (31-33), which air flow is flow-connected to an air flow in the roof module (30), wherein the upper horizontal strut (4-7) on which the double wall (31-33) is fastened has a cross section in terms of flow technology which allows for an at least partial horizontal air flow from the double wall (31-33) and an at least partial vertical air flow to at least one opening (30a) in the roof module (30), the opening (30a) in the roof module (30) being arranged so