A delivery/drop box is provided for parcels and products (“items”). The box comprises: a frame; a plurality of wall, floor, fixed roof, and fixed front panels securable to the frame; a cam roof section hingeably securable to at least one of the frame and the fixed roof section; a drop door assembly hingeably securable to at least one of the frame and the fixed front panel. As the drop door assembly is moved to an open position, the cam roof section moves to a raised position and an opening into an interior of the box is created. The box further comprises a lockable door panel hingeably securable to one of the side or rear panels, whereby an item passed through the opening into the interior of the box is accessible when the door panel is unlocked and open and is inaccessible when the door panel is closed and locked.