Opening up the case we're presented with a layout somewhat reminiscent of NZXT's S340 enclosure (an outstanding budget case I reviewed a year ago), with an open interior and a protruding metal panel in the back that's designed to help hide some of the cables next to the motherboard.
The shroud covering the bottom area of the enclosure hides the power supply and related cable mess, and the NZXT logo here is actually backlit (this can be switched on or off).
No enclosure review would be complete without a look at the door panels, and here the Manta doesn't skimp.
These are the fantastic doors! They slide off smoothly, thumb screws remain attached, and the doors (made of a combination of steel and plastic panels) have a really high quality feel overall.
Moving past the door panels to other aspects of the enclosure (if we must), we'll have a look at the default cooling, starting with the front intake.
A pair of fans are pre-installed here, and these connect to the controller behind the motherboard. There is a screen filter between these fans and the front of the enclosure to keep the interior clean, as we'll see in a moment.
Moving to the rear of the enclosure, we see the pre-installed 120 mm exhaust fan:
With the front and top plastic body panels removed, which is thankfully quite easy, we have easy access to the fan mounts.
And up front we see the pre-mounted front fans, and also see that the area is recessed to allow installation of thicker fans or a radiator behind the front panel.
Looking behind the motherboard tray now, we see the space along the bottom for the power supply (and room for a floor-mounted hard drive).
Below the large cutout behind the motherboard tray we have the fan controller, which comes pre-wired to the included case fans, and offers a PWM fan cable to connect to a motherboard header. I prefer PWM solutions like this, as it allows me to create custom fan speed profiles with my motherboard software (or in the UEFI setup itself, as is the case with this EVGA Z170 Stinger motherboard).