# PC case Montech AIR 903 BASE Midi Tower White

**URL:** https://aio.lv/en/product--montech-air-903-base-w--10656622
**Data updated:** 2025-12-30 09:51 (EET)
**Category:** Computer Cases
**Manufacturer:** Montech
**Manufacturer code:** AIR 903 BASE W
**EAN:** 4710562744347
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 61.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 50.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--montech-air-903-base-w--10656622

## 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 white features a sleek design with excellent airflow. It includes 2x 140 mm front fans and 1x 140 mm rear fan, supporting 120 mm and 140 mm fan sizes. The case accommodates 3.5" HDDs and 2.5" SSDs, with dimensions of 230 mm width, 478 mm depth, and 493 mm height, making it a versatile choice for any PC build.

## Long description

The Montech AIR 903 BASE Midi Tower in white is a mid-tower PC case designed for strong airflow and broad component compatibility. The case features a metal front panel with extensive ventilation, pre-installed 3x 140 mm PWM fans (two front, one rear), and support for large GPUs and multiple cooling configurations. It accommodates ATX and E-ATX motherboards, offers ample storage mounting for 3.5" and 2.5" drives, and includes practical cable management features for a tidy build.
Advantages
The AIR 903 BASE provides a high front ventilation rate to maximize airflow and improve thermal performance while maintaining easy-to-clean dust filters and a quick-release design. With three pre-installed HP140 PWM fans, the case balances cooling performance and noise control. It supports extensive cooling options including up to 9 fans and 360 mm AIO radiators front and top, and offers generous clearance for large graphics cards and tall CPU coolers. Cable routing is simplified by a 27 mm routing channel, rubber grommets and Velcro straps.
Suitable for
Gaming desktop builds with large graphics cards (up to 400 mm length, 190 mm width)
High-performance systems requiring multiple fans or 360 mm AIO radiators
Workstation or content-creation builds using ATX or E-ATX motherboards
Builders who prefer easy dust maintenance and clean cable management
Key specifications
Form factor: Midi Tower
Supported motherboards: ATX, E-ATX, Micro ATX, Mini-ITX
Pre-installed fans: 3 x 140 mm PWM (2 front, 1 rear)
Fan support: up to 9 fans; front/top support for 360 mm AIO
Drive bays: 2 x 3.5" and 5 x 2.5"
GPU clearance: up to 400 mm length and 190 mm width
Dimensions (W x D x H): 230 x 478 x 493 mm
Case color: White
Weight: 7.6 kg
Front I/O: 2 x USB 3.2 Gen 1 Type-A
How to use
Install the chosen motherboard on the pre-punched standoffs, route power and data cables through the 27 mm cable channel and rubber grommets, and secure drives in the designated 3.5" or 2.5" bays. Configure fans and connect the pre-installed HP140 PWM fans to the motherboard fan headers or a controller. When installing large GPUs or vertical mounting (vertical mount sold separately), remove the necessary PCIe slot covers and ensure adequate clearance for airflow. Use the quick-release front panel and dust filters for routine cleaning.
Usage recommendations
For optimal cooling and lowest noise, use PWM fan control via motherboard headers and maintain the front and top dust filters regularly. When installing very long or wide GPUs, check clearance including cables and aftermarket coolers; for vertical GPU mounting, use the official Montech vertical mount kit sold separately.

## 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 | White |
| 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 61.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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/10656622/64995922_large.webp