Abstract: A device for cooling a rolled product such as a steel strip moving in front of the device includes a box filled with a pressurized gas. The box comprises a plurality of fins forming pipes, each fin including at least one gas outlet orifice directed towards at least one surface of the rolled product. The orifices of each fin are aligned in the transverse direction of the rolled product. Each space between two adjacent fins has a depth in a direction perpendicular to the surface of the rolled product and a width in the longitudinal direction of the rolled product sufficient to enable evacuation of the gas without disrupting the exit of the gas from the adjacent fins.