Antec Twelve Hundred

The original Twelve Hundred includes three 120 mm front fans, two 120 mm rear fans, and a top-mounted 200 mm Big Boy fan. The front fans are positioned to move air across the hard-drive cages.

The Twelve Hundred is an expanded follow-up to Antec's Nine Hundred gaming case design. It adds room for 12 drive bays and seven expansion slots, making it better suited to large multi-drive builds.

Yes, the chassis includes a water-cooling platform intended for a reservoir or pump, although modern radiator installation may require checking the exact loop hardware. Its large internal volume was designed for high-end components and custom cooling.

Its cooling layout uses three front intakes, two rear exhausts, and one 200 mm top exhaust. That six-fan arrangement gives the case a much more airflow-focused design than closed-front office towers.