This listing is for one new in box Hoffman A12106PHC PolyPro Modified Enclosure for electrical connections or industrial control panels, NEMA Type 4, 4X, 12, 13. Size 12" x 10" x 6". No optional backplate included.  The modification is a hole drilled into the top of the box.  The kit includes box latches, a cable gland that fits into the top hole, and mounting fins.  Free shipping.