With an all black chassis, the majority of the case is metal. The exceptions are the edges on the front bezel, the feet and the stacking rails. The left side of the case has a very large window to show off the components.
The front of the mid-tower portion is fairly standard, with a wire mesh covering the majority of the front. At the top is the usual front I/O cluster that includes the power button, headphone/microphone jack, two USB 2.0 and two SuperSpeed USB 3.0 ports; there is no reset button. There are three 5.25 inch device bays below the I/O cluster. The Cooler Master logo is on the bottom section of the case, rather than call out to be looked at, the logo is black to match the rest of the case.
The left side panel has a large tinted window that is raised a little from the metal side panel. The panel is held in place by two thumbscrews, which are designed to stay with the panel rather than being removed.
The back panel provides the usual items; three external liquid cooling grommeted holes, standard motherboard I/O key, a 120mm or 140mm (included) exhaust fan, eight plus one expansion ports, and finally a bottom mounted power supply.
On the bottom of the case is a removable filter, that pulls out the back of the case below the power supply.
The right side panel is plain, nothing happening here. Like the left window panel, it is held in place by two thumbscrews and is easily removed with the handle.
The Stacker 935 comes pre-configured to have the 915R stacked on the top. As such, there is no top panel, rather it is open. Along the sides are the rails used to mount the 915, which are removable should the 915 be mounted on the bottom. If a 915 unit is not mounted on the top, the specifications state 2x 120mm fans can be mounted here. Most likely a liquid cooling radiator could be mounted here as well.
The bottom of the case we find two grommeted holes in the event that a 915 case is on the bottom. In addition, we see the removable power supply filter.