# PC Case Montech AIR 903 BASE Midi Tower Black

**URL:** https://aio.lv/en/product--montech-air-903-base-b--10656623
**Data updated:** 2025-12-30 09:51 (EET)
**Category:** Computer Cases
**Manufacturer:** Montech
**Manufacturer code:** AIR 903 BASE B
**EAN:** 4710562743784
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 62.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 52.06 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--montech-air-903-base-b--10656623

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 7.83 EUR |

## Summary description

The Montech AIR 903 BASE Midi Tower in black offers excellent cooling with 2 front 140mm fans and 1 rear 140mm fan. It supports HDD sizes of 3.5" and SSDs of 2.5". With dimensions of 230mm width, 478mm depth, and 493mm height, it provides ample space for components while maintaining a sleek design.

## Long description

The Montech AIR 903 BASE Midi Tower in black is a mid-tower PC case designed for airflow-focused builds. It comes pre-installed with three 140mm PWM fans (two front, one rear), a metal front panel with extensive ventilation, and support for multiple drive options including two 3.5" bays and five 2.5" bays. The case accommodates ATX and larger motherboards including E-ATX and SSI-EEB, provides space for long and wide graphics cards, and offers organized cable routing with a 27mm clearance, rubber grommets and Velcro straps.
Advantages
The AIR 903 BASE combines a high-ventilation metal front panel (approximately 51% open area) with pre-installed HP140 PWM fans to deliver strong airflow and effective cooling while maintaining low noise levels through adjustable fan speeds. Dust protection is simplified via strategically placed filters and a quick-release design for easier cleaning. The interior supports extensive cooling configurations—up to 360mm AIO radiators at the front and top and up to nine fans overall—while providing roomy clearance for large CPU coolers and GPUs up to 400mm long and 190mm wide. Cable management features and pre-punched mounting and routing holes streamline installation of ATX, E-ATX and SSI-EEB motherboards.
Suitable for
Airflow-optimized gaming or workstation builds
Systems using large GPUs (up to 400mm length, 190mm width)
Configurations requiring multiple storage drives (2×3.5" and 5×2.5" support)
Custom cooling setups with front/top 360mm AIO radiators or multiple fan layouts
Key specifications
Type: PC case, Midi Tower
Model: Montech AIR 903 BASE B (MPN AIR 903 BASE B, EAN 4710562743784)
Pre-installed fans: 3 × 140mm PWM (2 front, 1 rear)
Drive bays: 2 × 3.5", 5 × 2.5"
Motherboard support: ATX, E-ATX, Micro ATX, Mini-ITX, SSI-EEB
GPU support: up to 400mm length, up to 190mm width
Radiator support: up to 360mm front/top
Front ventilation: ~51% open area metal panel
Exterior color: Black
Dimensions (W×D×H): 230 × 478 × 493 mm
Weight: 7.6 kg
Front I/O: 2 × USB 3.2 Gen 1 Type-A
How to use
Install the motherboard using the pre-punched standoff holes and route power and data cables through the 27mm cable channel, using the rubber grommets and Velcro straps to secure cables and maintain a tidy interior. Fit storage drives in the designated 3.5" and 2.5" bays and mount the GPU in a standard or vertical orientation (vertical mounting kit sold separately) after removing the required PCIe slot covers. For optimal cooling, place radiators or additional fans in supported front or top positions and configure fan speeds via the motherboard or fan controller to balance noise and thermals.
Usage recommendations
Use the quick-release front panel and accessible dust filters for regular cleaning to maintain optimal airflow. When installing high-power graphics cards, ensure adequate clearance and consider front or top 360mm AIO cooling for lower component temperatures.

## Specifications

### Design

| Feature | Value |
|---|---|
| Type | PC |
| Form factor | Midi Tower |
| Supported motherboard form factors | ATX, EATX, Micro ATX, Mini-ATX |
| Number of 3.5" bays | 2 |
| Number of 2.5" bays | 5 |
| Side window | Yes |
| Product colour | Black |
| Illumination | Yes |
| Anti-dust filter | Yes |
| Illumination colour | Multi |
| Suitable for | Gaming |
| Maximum CPU cooler height | 180 mm |
| Maximum graphics card length | 400 mm |
| Number of expansion slots | 7 |
| Maximum PSU length | 240 mm |
| Illumination location | Case fans |
| Cable management | Yes |
| Reset button | Yes |
| On/off button | Yes |
| RGB control button | Yes |

### Power supply

| Feature | Value |
|---|---|
| Power supply included | No |

### Ports & interfaces

| Feature | Value |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Audio input | Yes |
| Audio output | Yes |

### Cooling

| Feature | Value |
|---|---|
| Front fans installed | 2x 140 mm |
| Number of front fans supported (max) | 3 |
| Front fans diameters supported | 140, 120 |
| Rear fans diameters supported | 120, 140 |
| Top fans diameters supported | 120, 140 |
| Number of rear fans supported (max) | 1 |
| Number of top fans supported (max) | 3 |
| Rear fans installed | 1x 140 mm |
| Front radiator sizes supported | 120, 140, 240, 280, 360 |
| Top radiator sizes supported | 140, 240, 360, 120, 280 |

### Storage

| Feature | Value |
|---|---|
| Number of HDDs supported | 2 |
| Supported HDD sizes | 3.5 |
| SSD form factor | 2.5" |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 7.6 kg |
| Height | 493 mm |
| Width | 230 mm |
| Depth | 478 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 9050 g |
| Package depth | 555 mm |
| Package height | 535 mm |
| Package width | 293 mm |

## FAQ

### How much does the PC Case Montech AIR 903 BASE cost, and is it available for purchase?

The price is 62.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 53 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Montech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Montech service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, form factor, number of 3.5" bays, number of 2.5" bays, side window, power supply included, usb 2.0 ports quantity, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, weight, supported motherboard form factors, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10656623/64995932_large.webp