# PC Case CHIEFTEC GS-03B-BLK-OP Midi Tower, black, supports Mini-ITX/Micro ATX/ATX/EATX, 3×140 mm front fans, rear fan, 2×3.5" bays, side window

**URL:** https://aio.lv/en/product--chieftec-gs-03b-blk-op--11357950
**Data updated:** 2026-01-13 11:28 (EET)
**Category:** Computer Cases
**Manufacturer:** CHIEFTEC
**Manufacturer code:** GS-03B-BLK-OP
**EAN:** 0753263078872
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 40.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-gs-03b-blk-op--11357950

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 7.09 EUR |

## Summary description

The CHIEFTEC GS-03B-BLK-OP is a black Midi Tower PC case offering support for Mini-ITX, Micro ATX, ATX and EATX motherboards. It features three 140 mm front fans and one rear fan for optimized airflow, two 3.5" HDD bays, a side window and no included power supply. Dimensions: 238×440×450 mm; practical for gaming rigs and workstation builds.

## Long description

The CHIEFTEC Midi Tower GS-03B-BLK-OP is a black PC case designed for desktop PC builds that require good airflow and a modern appearance. It fits standard motherboard sizes including ATX, micro ATX, Mini-ITX and EATX, offers a side window for component visibility, includes anti-dust filtration, and accepts 2.5" and 3.5" hard drives. The case dimensions are approximately 238 mm (W) × 440 mm (D) × 450 mm (H) and its net weight is specified as 8.01 kg.
Advantages
The chassis provides compatible support for multiple motherboard form factors, a side window for visual access to internal components, and built-in anti-dust filters to reduce dust ingress. Front cooling is optimised with three 140 mm front fans and a rear fan preconfigured to improve airflow. The case accommodates both 2.5" and 3.5" drives and has a compact mid-tower footprint suitable for a range of builds.
Suitable for
Home and office desktop PC builds
Gaming systems that require improved front-to-rear airflow
Systems needing visible internal components via a side window
Builds using ATX, micro ATX, Mini-ITX or EATX motherboards
Key specifications
Form factor: Midi Tower
Supported motherboard form factors: ATX, micro ATX, Mini-ITX, EATX
Drive compatibility: 2.5" and 3.5" HDD/SSD
Preinstalled fans: three 140 mm front fans and one rear fan
Side panel: windowed side panel
Dust protection: anti-dust filter(s)
Dimensions (W×D×H): 238 mm × 440 mm × 450 mm
Colour: Black
Weight: 8.01 kg
How to use
Install the chosen compatible motherboard into the standoff positions provided, mount storage drives into the appropriate 2.5" or 3.5" bays, and install the power supply in the designated compartment (power supply not included). Connect the preinstalled fans to the motherboard or fan controller following the manufacturer’s wiring layout, route cables for unobstructed airflow, and secure the side panel to view internals or to access components during assembly and maintenance.
Usage recommendations
For sustained cooling performance, ensure dust filters are cleaned regularly and maintain unobstructed front-to-rear airflow. Verify motherboard and cooler clearance against the case dimensions before final assembly.

## Specifications

### Design

| Feature | Value |
|---|---|
| Type | PC |
| Form factor | Midi Tower |
| Supported motherboard form factors | Mini-ITX, Micro ATX, EATX, ATX |
| Number of 3.5" bays | 2 |
| Side window | Yes |
| Product colour | Black |
| Anti-dust filter | Yes |
| Suitable for | Gaming |
| Number of internal 3.5" bays | 2 |
| Maximum CPU cooler height | 178 mm |
| Maximum graphics card length | 425 mm |
| Maximum PSU length | 200 mm |
| On/off button | Yes |
| Tempered glass panel(s) | Yes |
| RGB control button | No |

### Power supply

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

### Ports & interfaces

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

### Cooling

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

### Storage

| Feature | Value |
|---|---|
| Supported HDD sizes | 2.5, 3.5 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 8.01 kg |
| Height | 450 mm |
| Width | 238 mm |
| Depth | 440 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 9220 g |

### Packaging content

| Feature | Value |
|---|---|
| Manual | Yes |

## FAQ

### How much does the CHIEFTEC GS-03B-BLK-OP Midi Tower PC Case cost, and is it available for purchase?

The price is 48.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 410 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 Friday 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: Cash payment, 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 CHIEFTEC 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 CHIEFTEC 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 5.25" bays, side window, power supply included, 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/11357950/65837421_large.webp