Montech AIR 903 BASE Black

4.9 61 ratings
PC Case - ATX, mATX (Micro ATX), mITX (Mini ITX), eATX (Extended ATX) and SSI-EEB, 2× 3,5" slot(s), 5× 2,5" slot(s), 7× 2.5"/3.5" slot(s), USB 3.2 Gen 1, USB-C, 3.5mm jack (headphones), 3.5mm jack (microphone) and 3.5mm jack (mic/headphones), 3×140mm, max. heat sink height: 180mm, max. graphics card length: 400mm, without power supply, side panel made of tempered glass
  59.90 €
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Montech AIR 903 BASE Black

The Montech AIR 903 BASE Midi Tower PC case in black is designed for building PC systems that demand excellent cooling and ample internal space. Its concept focuses on maximum airflow, achieved through a perforated front panel with 51% ventilation. This design creates the ideal conditions for running powerful gaming and professional components. The spacious interior supports the installation of motherboards up to E-ATX format and offers plenty of room for large graphics cards and tall CPU coolers. It includes three pre-installed 140mm fans that ensure immediate heat dissipation.

PC case

Midi Tower

Case size
PC case

180mm

Max. CPU cooler height
PC case

400mm

Maximum graphics card length
PC case

3×

Number of installed fans
PC case

9×

Total number of fan positions
Montech AIR 903 BASE Black PC case

Key features of the Montech AIR 903 BASE Black PC case

  • Three pre-installed fans ensure effective airflow
  • Design supports the installation of large graphics cards
  • Internal space accommodates tall processor coolers
  • Supports the installation of water-cooling radiators at the front and top
  • Front panel features a modern USB-C port and high-speed USB ports
  • Tempered glass side panel offers a view of the internal components
  • Features seven positions for hard drives and SSDs

Construction and design

The steel chassis gives the entire build the necessary rigidity and reduces vibration transfer. The left side panel, made of tempered glass, reveals the internal components and allows for visual inspection of the build without disassembly. With external dimensions of 47.8 × 23 × 49.3cm, the case maintains the standard size of a Midi Tower, yet offers exceptional internal volume for powerful hardware and its effective cooling. The clean lines and black finish underscore its functional focus.

Montech AIR 903 BASE Black PC case
Montech AIR 903 BASE Black PC case

Cooling system and maintenance

The manufacturer has fitted the case with three 140mm HP140 PWM fans, which immediately create a strong airflow. A total of nine fan positions are available, offering extensive options for further customising the cooling system. For liquid cooling enthusiasts, the design supports the mounting of radiators up to 360mm on both the front and top panels. Dust filters with a quick-release mechanism ensure the interior stays clean and simplify maintenance.

Internal layout and storage

The internal layout accommodates ATX, mATX, and mITX motherboards, as well as the larger E-ATX and SSI-EEB formats. Users can install air CPU coolers up to 180mm in height and graphics cards up to 400mm in length, which includes even the largest gaming accelerators on the market. For storage devices, there are a total of seven positions: two for 3.5-inch hard drives and five for 2.5-inch SSDs, covering the needs of most builds.

Montech AIR 903 BASE Black PC case
Montech AIR 903 BASE Black PC case

Cable management and PSU

The ATX-format PSU is housed in a separate tunnel at the bottom, which contributes to better cable management and thermal isolation from other components. Behind the motherboard, you will find a dedicated space for cable routing that is 27mm wide. This solution, along with rubber grommets and Velcro straps, significantly simplifies the build process and helps maintain a clean interior appearance, which is crucial for uninterrupted airflow.

Connectivity and controls

The control panel is located on the top for convenient access, even when the case is placed on the floor. It includes a modern USB-C connector, two USB 3.2 Gen 1 ports, and audio jacks for headphones and a microphone. The presence of both a combined and separate 3.5mm jacks expands compatibility with various types of headsets. This selection of connectors fully meets the current demands for connecting modern peripherals and external storage devices.

Montech AIR 903 BASE Black PC case
Montech AIR 903 BASE Black PC case
Montech AIR 903 BASE Black PC case
Montech AIR 903 BASE Black PC case

Motherboard formats

  • ATX
  • mATX (Micro ATX)
  • mITX (Mini ITX)
  • eATX (Extended ATX)

Fans

  • Front fan positions: 3× 120mm / 3× 140mm
  • Rear fan positions: 1× 120mm / 1× 140mm
  • Top fan positions: 3× 120mm / 2× 140mm
  • Bottom fan positions: 2× 120mm

Ports

  • USB 3.2 Gen 1
  • USB-C
  • 3.5mm jack (headphones)
  • 3.5mm jack (microphone)

Specifications

Compare
Location
Freestanding
Colour
Black
Motherboard form factor
ATX, eATX (Extended ATX), mATX (Micro ATX), mITX (Mini ITX), SSI-EEB
Number of internal 3.5" slots
2×

Usage and size

Location
Freestanding

Colour

Colour
Black

Internal structure

Motherboard form factor
ATX, eATX (Extended ATX), mATX (Micro ATX), mITX (Mini ITX), SSI-EEB
Number of internal 3.5" slots
2×
Number of internal 2.5" slots
5×
Number of internal 2.5"/3.5" slots
7 ×
Max. processor heat sink height
180 mm
Max. graphics card length
400 mm

External structure

Front panel location
top
Front panel connectors
3.5mm jack (headphones), 3.5mm jack (mic/headphones), 3.5mm jack (microphone), USB 3.2 Gen 1, USB-C
Sidewalls
Transparent
Side panel material
Tempered glass
Additional equipment
Transparent door, Ventilator

PSU

Power supply
Without power supply
Supported PSU format
ATX

Cooling system

Front fan size
2x140mm, 3x120mm, 3x140mm
Rear fan size
1x120mm, 1x140mm
Top fan size
2x140mm, 3x120mm
Bottom fan size
2x120mm
Number of fan positions
9×
Number of mounted ventilators
3×140mm
Supported radiator size on top
120mm, 140mm, 240mm, 280mm, 360mm
Supported radiator size from the front
120mm, 140mm, 240mm, 280mm, 360mm
Supported radiator size from below
120mm

Backlight

Backlight colour
No backlighting

Material

Wardrobe material
Steel

Dimensions

Width
230 mm (23 cm)
Height
478 mm (47.8 cm)
Depth
493 mm (49.3 cm)
More Specifications
Note:

Specifications can be changed without notice. Images are for illustrative purposes only.

Dobrý den, chtěl bych se zeptat, vejde do skříně G.SKILL 32GB KIT DDR5 6000MHz CL30 Trident Z5 NEO RGB s ARCTIC Liquid Freezer III 360 když ho namontuji nahoru ? Děkuji.

Určitě je výška chladiče 180mm? Když změřím chladič od plošky, která je na cpu až k nejvyššímu bodu chladiče, tak to platí a vejde se? Mám 177mm.

Dobrý den, chtěl bych upozornit na špatně uvedené rozměry PC skříně. Měly by být 478*230*493 (mm) V/Š/H

Dobrý den, chci se optat na výšku , píšete jen 23 cm??

Prosím, aktualizujte podporu radiátorov v popise. Napísané tam máte 140mm, aj keď v manuáli je 360mm vpredu aj hore. Ak by som sa riadil čisto filtrami tejto stránky, nikdy by som nenašiel túto super skrinku. Ďakujem.

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