Abstract: A tray which may be set up in the field and locked into position without the use of glue or staples. A pair of end panels are provided on each end of the tray. One of these end panels extends from the bottom panel of the tray and the other extends from the upper panel of the tray. One is an exterior end panel and the other is an interior end panel. The exterior end panel has a pair of locking flaps which fold around the interior end panel and are held in place by a locking panel. The locking panel is hinged to the upper wall of the tray and folds down against the locking flaps holding the locking flaps against the interior end panel and locking the various members of the end wall into place. The locking panel is held in place by locking tabs in the panel which extend into apertures in the base panel of the tray.