The BP-D is
a single-piece, powder-coated steel backplate designed to accommodate
two MP or MPX enclosures, two Magnum inverters, and two inverter hoods
together; making the complete system appear more seamless. Designed with
PEM (i.e. internally threaded) nuts, the backplate is shipped with ¼-20
x ¾” Hex head bolts for easily mounting the MP enclosure, a Magnum
inverter, and the inverter hood.