Montech AIR 903 MAX Black Case

Montech AIR 903 MAX Black

Brand
Montech
Model
AIR 903 MAX Black
$76–$84estimated range · from catalog price Oct 31, 2026

Montech AIR 903 MAX (2023) budget E-ATX mid-tower with 4x 140mm fans, 360 mm rad support, 400 mm GPU and 180 mm cooler clearance, high-airflow mesh panel.

TierBudget?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
ReleasedJun 2023
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Form factorATX, mATX, Mini-ITX
ColorBlack
Tempered glassYes
Max GPU length400 mm
GixCore Editorial

Product overview

Released June 27, 2023 as part of Montech’s AIR 903 family (Base and Max), the AIR 903 MAX is a high‑airflow E‑ATX mid‑tower case. It is not discontinued.

Positioned in the budget tier, it exists to deliver big‑case compatibility and cooling at a low price. It fits E‑ATX/ATX/mATX/ITX (true E‑ATX/SSI‑EEB), clears 400 mm GPUs and 180 mm tower coolers, and supports 360 mm radiators at the top and front. The case ships with 3x 140 mm ARGB + 1x 140 mm PWM fans, uses an ATX PSU, has a tempered‑glass side and mesh front, front I/O with USB‑C + 2x USB 3.0, and room for up to seven drives. Notably, it brings SSI‑EEB support to a budget mid‑tower.

Best for
  • airflow builds
  • water cooling/radiators
  • budget builds
  • high GPU clearance
  • showcase/RGB
Pairing fit

Compatible Motherboards

Compatible options ranked for this part's performance class.

Pairing fit

Compatible Power supplies

Compatible options ranked for this part's performance class.

Specifications

At a glance iDots are a representative catalog sample. Farther right means a higher measured value, not necessarily a better fit.Measured against the cases catalog
Current modelCatalog sample
Max GPU length400 mm
Higher than 33% of cases
Form factor
ATX, mATX, Mini-ITX
Color
Black
Tempered glass
Yes
Max GPU length
400 mm
Dimentions
18.82 x 9.06 x 19.41 in
Weight
17.31 lb
I O Ports
1x USB Type-C, 2x USB 3.0
Expansion Slots
7
Max Cooler Height
180 mm
Radiator Support
Front 120/140/280/360 mm, Top 120/140/280/360 mm, Rear 120 mm
Psu Form Factor
ATX