A Closer Look - Inside

To access the interior, remove the thumb screws holding each metal component in place. The glass panel uses pins, so simply pull it off the case gently. On the opposite side, the vent in the steel panel comes with a magnetic filter to keep dust out. Thermaltake employs 3-mm-thick glass panels for the Divider series, and this holds true for the 300 TG Air as well.

The interior layout is quite traditional but for the somewhat rare ability to place cooling on the side towards the front of the case. A metal shroud covers the PSU and 3.5" drive bays and comes with some venting for the part below the motherboard tray. Flipping the case over, we see that the side-mounting possibility for cooling is slightly recessed, which is usually done to allow for an AIO alongside a long GPU without issue, while black grommets allow for clean cable routing as well.


That fan mount is specifically meant for a 240 or two 120 mm fans. A 120 mm radiator setup would not fit as the mounting holes on the outer corners are L-shaped for a slight radiator offset, which keeps it from colliding with the front fans. Slightly further back are two separate SSD brackets underneath the large opening for the motherboard CPU area.


Underneath the shroud, you will find a cage with two hard-drive trays for either 3.5" or 2.5" drives. It is all about cooling in the front above that, with the three fans mounted on a single bracket. A solid metal cover on the side mount may hold three more 2.5" drives should you opt not to use this area for cooling. This is a nice touch and allows you to show off your drives nicely in such a build scenario. You may remove it by detaching a single thumb screw, which reveals the cutout for cooling purposes.


The PSU bay on the bottom of the rear is pretty standard, and you can see the round indentation where you are meant to install the black rubber spacer. There is plenty of space for you to go for a potent mainstream PSU, so you are free to install beefy components. The seven expansion slots above that are protected by individual, reusable covers in the same color as the rest of the case, each secured by a black thumb screw. In the very top, the black exhaust fan feels and looks sturdy. It comes with a 3-pin header and nicely sleeved cable.


In the ceiling, just above the CPU area, the 120/140 mm fan-mounting position also comes with a magnetic metal-mesh dust filter. It can even be kept in place when using a fan here as there are punch-outs in the mesh for screws to pass through.


All the leads within the Thermaltake Divider 300 TG Air are of the standard variety, so you should have no issue connecting all the aspects of the case.