Flow through rectangular enclosure with a central partition provides a convenient means of understanding the flow through passenger-car-cabin, clean rooms, operation theaters and other enclosed spaces. Flow through such a system is complex, i.e., three dimensional, turbulent and has low mean velocity. The present experimental investigation involves measuring the complete flow field by the use of a five-holed probe and is aimed at studying the flow field deflection due to the presence of a fixed central partition. Vector plots in vertical planes perpendicular to the longitudinal and transverse axes of the enclosure are discussed. The available measurements indicate that as the jet approaches the partition, the flow is deflected upwards. However behind the partition, the jet fills up the enclosure with forward flow in the central region enveloped by regions of reverse flow at the top and bottom.