| SPECIFICATIONS | |
| Brand | Montech |
| Series | Air Series |
| Model | AIR 903 Base (B) |
| Physical Details | |
| Colour | Black |
| Materials | Steel |
| Plastic | |
| Side Panel | Tempered Glass |
| I/O Ports | 1x USB Type-C |
| 2x USB 3.0 | |
| 1x Mic | |
| 1x Headphone | |
| LED Switch | |
| Reset Button | |
| Motherboard Support | E-ATX, ATX, Micro-ATX, Mini-ITX |
| Expansion Slots | 7 |
| Drive Bays | 3.5": 2 |
| 2.5": 5 (Maximum, Utilising 1x 3.5"Drive Bay Position) | |
| PSU Support | 240 mm |
| Dimensions | 478 x 230 x 493mm (D x W x H) |
| Weight | 7.9kg |
| Pre-Installed Fans | |
| Front | 2x 140mm HP140 PWM |
| Top | N/A |
| Rear | 1x 140mm HP140 PWM |
| Fan Support | |
| Front | 3x 120mm, 3x 140mm |
| Top | 3x 120mm, 2x 140mm |
| Rear | 1x 120mm, 1x 140mm |
| Above PSU | 2x 120mm |
| Radiator Support | |
| Front | 360 / 280 / 240 / 140 / 120mm |
| Top | 360 / 280 / 240 / 140 / 120mm |
| Rear | N/A |
| Clearance | |
| Motherboard Tray | N/A |
| CPU Cooler Height Limitation | 180mm |
| GPU Length Limitation | 400mm |
| Cable Management | 27mm |
| Radiator Thickness | N/A |
| General | |
| Dust Filters | Top, Bottom |
| Chassis Lighting | N/A |
| Features | A Mid-Tower Case Designed for both Air and Liquid Cooling |
| 360mm Radiator Support at the Top and Front | |
| 180mm Height for a Top-Class Air cooler | |
| Innovative Mesh Front Panel for the Best Cooling Performance | |
| High-Performance HP140 PWM Fans | |
| Support for Vertical GPU Mounting* | |
| Ample Space for Flagship 4090 Graphics Cards | |
| Spacious Cable Management routes | |
| USB TYPE-C Port and 2x USB3.0 Port | |
| Warranty Information | |
| Warranty | 1 Year Warranty |
| Manufacturer's Site | Visit the manufacturer's website |
|---|---|
| Product Link | Visit the manufacturer's page for this product |
- Beast of a case - Matthew, 9 March 2026
Was much bigger than i was expecting, I had a micro-atx case and upgrading to this case was something I didn't know I needed. Airflow is amazing and my temps have dropped by about 10 degrees.
- Huge case offers insane value for money - Bergvliet High School, 15 November 2024
I bought 2 of these for our school earlier this year. I knew the case would be large based on the specs but handing it in person was something else. The case isn't expensive by any means, yet it offers top tier features, space and cooling performance all whilst being solidly built. In fact, if you don't use a full ATX sized motherboard and a large GPU, your setup may actually look a bit lost in a case this large.
It's not for every venue and situation, but if you need a slightly larger case for your build, I have no hesitation in suggesting this case. - Excellent case for the price - Prem, 12 January 2024
Build quality is on par with higher tier cases and the case is absolutely easy to build in.
No gpu/cpu cooler clearance issues and even the beefiest gpu will be able to fit in the case with ease.
The 3 included 140mm fans do an excellent job with airflow and compared to my previous case overall temps on components are much lower.
Id definitely recommend this case even over some of the higher offerings available. - 903 quality for the price - Junaid, 25 December 2023
This is my first montech case. The 903 air is huge. You wont have problems with with fitting most modern day Gpus. My rx 7700 xt fits with space to spare. For an entry level case with good airflow this is a must have. And its easy enough to build in and has staps and extra cable ties included in the case.
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