Abstract: A device for maximum vapor or gas throughput is provided for material and/or energy exchange, in which large vertical flow spaces are present. Vapors or gases flow without impact losses and thus with extremely low pressure loss per meter in counter flow to liquid on zigzag wires or threads arranged vertically next to one another, produced with conventional web or braiding machines, along wide-meshed fabric or grid webs and are brought for exchange with the liquid. Simultaneously, by optimizing the wire or thread diameter and its count and the arrangement of fabric or grid webs, considering the large vertical flow spaces and a uniform wetting of the large number of zigzag wires or threads arranged vertically next to one another against the wave peaks, a minimal specific volume of the device is achieved by wide-meshed fabrics or grids for the vapor or gas flow through a step-wise division of the trickling liquid.