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Black mid-tower case with mesh front panel, tempered glass side, three 140mm fans visible

Montech

Montech AIR 903 BASE (B) PC Case

SKU CH-SRVB-1N04G MPN AIR 903 BASE (B)

E-ATX mid-tower chassis with 51 % mesh ventilation, three 140 mm PWM fans, USB-C front port and room for 400 mm GPUs

  • TypeE-ATX Mid Tower Chassis
  • ColorBlack
  • Motherboard CompatibilityATX / E-ATX / Micro ATX / Mini ITX
  • Dust FiltersBottom / Top
  • Internal 3.5" Drive Bays2
  • Internal 2.5" Drive Bays5 (Maximum) (2.5” SSD*3 are supported with E-ATX MB installe

Options Base (Black)

  • Supports E-ATX and ATX motherboards for versatile builds
  • Mesh front panel delivers 51% ventilation rate for high airflow
  • Three pre-installed 140mm PWM fans provide strong cooling out of the box
  • Fits graphics cards up to 400mm length including RTX 4090 models
  • Front USB Type-C plus two USB 3.0 ports for fast connectivity

Case Capacity & Layout

The Montech AIR 903 BASE is a black E-ATX mid-tower chassis designed for high-airflow builds. It arrives with three pre-installed 140 mm PWM fans behind a mesh front panel rated at 51 % ventilation. The enclosure supports ATX, E-ATX, Micro-ATX and Mini-ITX motherboards and provides seven expansion slots.

Ideal Builders & Limitations

This case suits enthusiasts planning large graphics cards up to 400 mm long and 190 mm wide, plus 360 mm radiators in both front and top positions. CPU tower coolers up to 180 mm tall fit comfortably. Builders who need more than two 3.5-inch bays or who want a front panel without mesh should look at a different enclosure.

Deciding Specification

The maximum graphics-card length of 400 mm is the single figure that determines whether this chassis fits the intended GPU. If the card exceeds that dimension, the side panel will not close; if it is shorter, the case provides ample clearance for even the largest current models.

Fordele

  • Supports E-ATX and ATX motherboards for versatile builds
  • Mesh front panel delivers 51% ventilation rate for high airflow
  • Three pre-installed 140mm PWM fans provide strong cooling out of the box
  • Fits graphics cards up to 400mm length including RTX 4090 models
  • Front USB Type-C plus two USB 3.0 ports for fast connectivity

Specifikationer

BrandMontech
TypeE-ATX Mid Tower Chassis
ColorBlack
Motherboard CompatibilityATX / E-ATX / Micro ATX / Mini ITX
Dust FiltersBottom / Top
Internal 3.5" Drive Bays2
Internal 2.5" Drive Bays5 (Maximum) (2.5” SSD*3 are supported with E-ATX MB installed)
Expansion Slots7
Front Ports1 x USB Type-C, 2 x USB 3.0, 2 x Audio
Fan OptionsFront - 3 x 120mm / Front - 3 x 140mm / Rear - 1 x 120mm / Rear - 1 x 140mm / Top - 2 x 140mm / Top - 3 x 120mm
Radiator OptionsFront - Up to 360mm / Top - Up to 360mm
140mm Fans3
Max GPU Length400 mm
Max CPU Cooler Height180 mm
Max PSU Length240 mm
Dimensions18.82" x 9.06" x 19.41"
Forsendelsesvægt8.39 kg
Pakkestørrelse554 × 533 × 292 mm

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Spørgsmål om denne vare

Will a 400 mm long graphics card fit with a 360 mm radiator mounted at the front?

Yes, the case supports graphics cards up to 400 mm and a front radiator up to 360 mm simultaneously.

How many 2.5 inch SSDs can I install if I use an E-ATX motherboard?

With an E-ATX board fitted, three 2.5 inch SSDs are supported out of the five maximum bays.

What front-panel connectors are provided for a modern motherboard?

The front panel includes one USB Type-C port, two USB 3.0 ports and two audio jacks.

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