Montech AIR 903 MAX Black

Montech AIR 903 MAX Black
The Montech AIR 903 MAX PC case in black is a Mid-Tower solution designed for builds with high cooling demands. The design, featuring a perforated front panel, aims for direct airflow to the internal components. The interior is ready for motherboards up to E-ATX format. The case includes four pre-installed 140mm fans, creating a functional cooling system right out of the box. Inside, there is enough space for graphics cards up to 400mm long and CPU air coolers up to 180mm high.
Key features of the Montech AIR 903 MAX PC case, black
- Highly perforated metal front panel ensures direct air intake
- Four pre-installed PWM fans form the basis of the cooling system
- Three of the installed fans have addressable ARGB backlighting
- Top and front sections accommodate a water-cooling radiator
- Space behind the motherboard simplifies cable management
- Front I/O panel includes a USB Type-C port and two USB 3.0 ports
- The case is prepared for vertical graphics card mounting
High airflow of the Montech AIR 903 MAX case
The metal front panel is 51% perforated for unrestricted air intake. This design directs airflow straight to the key components. It also includes dust filters, which protect the inside of the build from dirt, and their quick-release design simplifies maintenance. The result is efficient heat dissipation and stable performance even under heavy loads.
Pre-installed PWM fans
The case includes four pre-installed 140mm HP140 fans with PWM speed control. Three front fans draw in cool air and are equipped with ARGB backlighting featuring 21 lighting effects. The non-backlit rear fan is responsible for exhausting hot air. PWM speed control gives you command over the balance between cooling performance and noise, letting you adapt the system's operation to your current needs.
Water cooling in the Montech AIR 903 MAX
For liquid cooling enthusiasts, the case is ready for radiator installation. Both the top and front positions can accommodate radiators up to 360mm. This flexibility expands the options for building custom cooling loops or using AIO coolers. A total of up to nine fans can be installed, giving users freedom in configuring airflow and cooling performance.
Compatibility with high-performance components
The internal layout supports high-performance hardware. The case accommodates E-ATX motherboards, for which mounting holes are provided. There is 400mm of length and 190mm of width available for graphics cards, which also covers large cards like the NVIDIA GeForce RTX 40 series. A space of 180mm in height is reserved for CPU air coolers.
Cable management in the Montech PC case
To maintain a clean internal layout, you'll find a 27mm space behind the motherboard for cable routing. This space is complemented by practical organisational features. Rubber grommets and Velcro straps help to fix cables in place and route them along hidden paths. Tidy cabling not only improves the aesthetics of the build, but also prevents disruption to the airflow inside the case.
Connectivity and vertical GPU mounting
The front I/O panel on top of the case offers modern connectivity. It includes one USB Type-C port and two USB 3.0 ports for connecting external devices. The case also enables vertical mounting of the graphics card. After removing all seven PCIe slot covers, a separately sold kit can be installed to place the card in a vertical position. This solution serves to visually highlight the graphics card.
Motherboard form factors
- eATX (Extended ATX)
- ATX
- mATX (Micro ATX)
- mITX (Mini ITX)
Fans
- Rear fan size: 1×120mm, 1×140mm
- Bottom fan size: 2×120mm
- Front fan size: 3×120mm, 3×140mm
- Top fan size: 2×140mm, 3×120mm
Ports
- USB Type-C
- USB 3.0
- 3.5mm jack (headphones)
- 3.5mm jack (microphone)
Specifications
Usage and size
Colour
Internal structure
External structure
PSU
Cooling system
Backlight
Material
Specifications can be changed without notice. Images are for illustrative purposes only.

