a loin box is provided which can be set up without the use of tools . the rear wall is provided with end walls and bottom reinforcing panels , as well as an end wall reinforcing panel . the front wall is provided with end walls which are sandwiched between the outer end wall and the end wall reinforcing panel . the top panel is provided with a front flange having extensions which fold outwardly of the end walls . the box is held closed by locking flaps on the ends of the top panel which extend through hand holes in the end walls .