A closure device for closing flaps of a box, the closure device comprising: a closure assembly, comprising: a T-shaped structure having a distal end, a proximal end, and a horizontal surface upon which a box can move during a closure process, the horizontal surface of the T-shaped structure being configured to close a first minor flap of the box; a guide positioned on each side of the T-shaped structure, each guide being angled relative to the horizontal support surface of the T-shaped structure and adapted to close major flaps of the box as the box is moved proximally across the T-shaped structure; and a minor flap closure device comprising at least one of: an upwardly extending portion linked to the distal end of the T-shaped structure and being configured to close a second minor flap of the box, the upwardly extending portion having a horizontal crossbar that is generally parallel to the horizontal surface of the T-shaped structure, the horizontal crossbar being configured to facilitate folding of the second minor flap or movement of the closure device; and a notched portion extending distally from the T-shaped structure, the notched portion being configured to close a second minor flap of the box. a closure assembly, comprising: a T-shaped structure having a distal end, a proximal end, and a horizontal surface upon which a box can move during a closure process, the horizontal surface of the T-shaped structure being configured to close a first minor flap of the box; a guide positioned on each side of the T-shaped structure, each guide being angled relative to the horizontal support surface of the T-shaped structure and adapted to close major flaps of the box as the box is moved proximally across the T-shaped structure; and a minor flap closure device comprising at least one of: an upwardly extending portion linked to the distal end of the T-shaped structure and being configured to close a second minor flap of the box, the upwardly extending portion having a horizontal crossbar that is generally parallel to the horizontal surface of the T-shaped structure, the horizontal crossbar being configured to facilitate folding of the second minor flap or movement of the closure device; and a notched portion extending distally from the T-shaped structure, the notched portion being configured to close a second minor flap of the box. a T-shaped structure having a distal end, a proximal end, and a horizontal surface upon which a box can move during a closure process, the horizontal surface of the T-shaped structure being configured to close a first minor flap of the box; a guide positioned on each side of the T-shaped structure, each guide being angled relative to the horizontal support surface of the T-shaped structure and adapted to close major flaps of the box as the box is moved proximally across the T-shaped structure; and a minor flap closure device comprising at least one of: an upwardly extending portion linked to the distal end of the T-shaped structure and being configured to close a second minor flap of the box, the upwardly extending portion having a horizontal crossbar that is generally parallel to the horizontal surface of the T-shaped structure, the horizontal crossbar being configured to facilitate folding of the second minor flap or movement of the closure device; and a notched portion extending distally from the T-shaped structure, the notched portion being configured to close a second minor flap of the box. an upwardly extending portion linked to the distal end of the T-shaped structure and being configured to close a second minor flap of the box, the upwardly extending portion having a horizontal crossbar that is generally parallel to the horizontal surface of the T-shaped structure, the horizontal crossbar being configured to facilitate folding of the second minor flap or movement of the closure device; and a notched portion extending distally from the T-shaped structure, the notched portion being configured to close a second minor flap of the box.