The Twelve Hundred is a pretty suave looking case. It has a strong matt black paint scheme with mostly flush panels; no extra plastic styling here.
The top front panel features the added USB 3.0 connector, as well as a pair of traditional USB 2.0 ports. Either side of the centre connectors are the reset and power switches, with twin 3.5mm ports on the right hand side.
Each of the front drive bays has a metallic plate keeping the interior dust free. However these are easily popped out from the inside. Other drive bays have hexagon grills to allow some air flow; it probably also cuts down on materiel cost. These extend all the way down the case, with the bottom 9 covering up the 12cm interior intake fans.
The left side panel (from the front) has a large plastic window built into it, surrounding a 12cm fan mount with a large grilled section. No dust filter here. Minus points there Antec.
The top is a little more featureful, with a large 20cm exhaust fan with another honeycomb grill covering it.
Infront of this is a large open area, making it perfect for putting your keys or pen drives.
At the rear we have twin 12CM exhaust fans, some watercooling tubing holes, floor based PSU mount and a top mounted fan controller.