Abstract: A portable light tower including a frame, and an enclosure supported by the frame. The enclosure defines an enclosure interior having a hot zone, and includes a plurality of inlet apertures and a plurality of discharge apertures. A generator driven by an engine are located in the enclosure interior and the generator and engine emit a hot exhaust gas into the hot zone during operation. The light tower also includes an exhaust chamber located in said hot zone, said exhaust chamber having a floor panel and a fan mounted in said floor panel for drawing the hot gas into the chamber and out the discharge apertures. The chamber is adapted to prevent the backflow of hot gas into the enclosure interior. The tower also includes a unitary forklift and bail plate and at least two retention assemblies located along the exterior of the enclosure for maintaining an enclosure door in open and closed positions.