Montech AIR 903 MAX White

Montech AIR 903 MAX White
The Montech AIR 903 MAX computer case in white is a mid-tower solution designed for builds with high cooling demands. Its design features a perforated front panel to ensure direct airflow to internal components. The interior is ready for motherboards up to E-ATX format. The case includes four pre-installed 140mm fans, creating an effective cooling system straight 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, white
- 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
- The top and front of the case can accommodate a water-cooling radiator
- Space behind the motherboard makes cable management easy
- The front I/O panel includes a USB Type-C port and two USB 3.0 ports
- The case is prepared for vertical mounting of the graphics card
High airflow of the Montech AIR 903 MAX case
The front panel is made of metal and its surface is 51% perforated for unrestricted air intake. This design directs airflow straight to key components. It also includes dust filters, which protect the inside of the build from dirt, and their quick-release design makes maintenance easy. The result is efficient heat dissipation and stable performance even under heavy load.
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 feature ARGB backlighting with 21 lighting effects. The rear fan, without backlighting, exhausts hot air. PWM speed control provides a balance between cooling performance and noise levels, letting you adapt the build'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 prepared. For graphics cards, there is space for cards 400mm long and 190mm wide, which covers even large cards like the NVIDIA GeForce RTX 40 series. For CPU air coolers, a space of 180mm high is reserved.
Cable management in the Montech PC case
To maintain a clean internal layout, you will find 27mm of space behind the motherboard for cable management. This space is complemented by practical organisational features. Rubber grommets and Velcro straps help to secure cables in place and route them through hidden paths. Tidy cabling not only improves the aesthetics of the build but also prevents disruption of airflow inside the case.
Connectivity and vertical GPU mounting
The front I/O panel on the 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 allows for 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 formats
- ATX
- mATX (Micro ATX)
- mITX (Mini ITX)
- eATX (Extended ATX)
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
Dimensions
Specifications can be changed without notice. Images are for illustrative purposes only.

