The APC NetShelter SX is a 42U server rack enclosure — a full-height cabinet for mounting rack servers, switches, PDUs and cabling infrastructure in a data centre or comms room, rather than a small wall-mount or open rack frame. This unit measures 750mm wide by 1070mm deep, a wider-and-deeper footprint than APC's standard NetShelter SX dimensions, giving extra side space for cable management and airflow around densely-packed equipment. The NetShelter SX line is built around perforated front/rear doors for airflow, adjustable mounting rails, and a design intended to support proper hot-aisle/cold-aisle airflow management — a genuine enterprise rack rather than a basic cabinet. Exact included accessories (casters, side panels, cable organizers, PDU mounting) aren't specified in this listing and should be confirmed before ordering.