Abstract: A flap positioning assembly of the type primarily designed to dispose the inner flap in substantially conventional containers into a position relative to the exterior flap so that stapling or otherwise securing of the flaps may be facilitated. A support frame includes a base plate and outwardly extending support arms having a clamp arm movable relative thereto by means of an orienting shaft capable of being manipulated to allow the clamp arm to be positioned in a clamped and non-clamped relation to the flaps of the container.