Container with triangular corner posts

A single-piece containerboard blank of the type that is erectable into a container having two multi-ply side panels, two end panels, and a bottom panel, the box blank comprising:

• (a) a generally rectangular bottom panel having longitudinal and transverse edges:
• (b) end walls, one end wall extending outwardly from each transverse edge of the bottom panel and connected thereto along a first transverse hinge line;
• (c) first side walls, one first side wall extending outwardly from each longitudinal edge of the bottom panel and connected thereto along a first longitudinal hinge line;
• the first side walls forming the outer wall in each of the side panels;
• (d) second side walls, one second side wall extending outwardly from each first side wall and connected thereto along a second longitudinal hinge line;
• each second side wall being of a longitudinal length that is less than the longitudinal length of its corresponding first side wall;
• each second side wall having forward and aft abutment edges;
• (e) first interior end walls extending longitudinally outward from the transverse edges of the first side walls and connected thereto along second transverse hinge lines;
• the first and second transverse hinge lines being generally collinear;
• and
• (f) second interior end walls extending transversely outward from each first interior end wall and connected thereto along a third longitudinal hinge line, the second interior end walls having a hypotenuse panel extending longitudinally toward the second side wall abutment edges;
• the hypotenuse panel having an inwardly oriented edge;
• the hypotenuse panel being connected to the second interior end wall along a third transverse hinge line;
• the third transverse hinge line being located outward of the second transverse hinge line and parallel thereto;
• the inwardly oriented edge being located inward of the second transverse hinge line;
• wherein as assembled, the second side wall folds down upon the first side wall at the second longitudinal hinge line and the combination folds generally perpendicular to the bottom panel along the first longitudinal hinge line so that the abutment edges are oriented in an upright manner, and the hypotenuse panels are also oriented in an upright manner and positioned so that their inwardly oriented edges push against the first side wall;
• the box blank further including cutouts in the second longitudinal hinge lines;
• wherein the cutouts in the second longitudinal hinge lines form one or more upright tabs as assembled;
• the box blank further comprising top closure panels connected to the end panels along a fourth transverse hinge line.