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CoolerMaster MasterBox Lite 3.1 Windowed mATX PC Case

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Cooler Master MasterBox Lite 3.1, Mini Tower Computer Chassis, MicroATX/Mini-ITX, with Window + Red/White/Black Trims

This item is currently discontinued and at present, we have no replacement on order.
 Web Only Product 
Quickcode: 71515  
Stock code: CSE-MCW-L3B3-KANN-01
Manuf. code: MCW-L3B3-KANN-01
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CoolerMaster MasterBox Lite 3.1 Windowed mATX PC Case

The Gateway to Stylish Gaming: Customizable Trim Colours
The MasterBox Lite 3.1 mATX Case is your straightforward option for your PC build that doesn't ignore good looks, customization, or performance. A sleek DarkMirror front panel and three custom trim colours (included in the box) offer a great first entry point for customization. Additionally, it comes with an edge to edge transparent acrylic side panel to show your internal components. And with support for up to 3 cooling fans and a water-cooling system, we ensure your performance will not suffer.

3D Printing: Freely Express Yourself
We know the community also has some awesome ideas, and the ability to express them in everything you make or do. So with that in mind, we've released the 3D printing schematics of the top and bottom trim. These are available to download from the CoolerMaster website.


- DarkMirror Front Panel: Stand out and be unique. Your case doesn't have to look boring.
- Customizable Trim Colours: Choose from three distinct colours to suit your style, all included in the box.
- Edge to Edge Transparent acrylic side pane: Show off your first build in style, and have easy access to your components in case things go haywire.
- Full Black Coating: Let your system stand out with an all-black background.
- Support for 3 Fans & Watercooling: Three 120mm fans and front watercooling support ensure that you don't have to compromise on performance.
- Graphics Card Support up to 380mm: You won't ever have to worry about the fit of your graphics card, with support for even the largest, widest cards.


- Model: Cooler Master MasterBox Lite 3.1 (MCW-L3B3-KANN-01)
- Case Form Factor: Mini Tower
- Motherboard Form Factor: MicroATX / Mini-ITX
- Top Panel I/O: 1 x Headphone Out / 1 x Mic In / 1 x USB 2.0 / 1 x USB 3.0
- Standard Expansion Slots 4

- Drive Bays
: 1 x 2.5" Internal
: 2 x 3.5" Internal

- Fans & Filters
: Fan Bays 3 x 120mm
: Fans Included 1 x 120mm

- Liquid Cooling Support
: Front Radiator Compatibility 1 x 120/240mm
: Rear Radiator Compatibility 1 x 120mm

- Clearances
: Max CPU Cooler Height 158 mm
: Max GPU Card Length 380 mm

- PSU Support ATX
- Max PSU Length 160 mm
- Colour Black with Swappable Red/White/Black Trims
- Chassis Contruction Materials Steel / Plastic
- Dimensions 208 x 381 x 456 (WxHxD mm)
- Weight 3.95 kg (Approx)

Warranty Information:

Manufacturer coolermaster
Warranty Type Direct with Manufacturer
Manufacturer Website
Manufacturer Phone 00 31 077 3968226
Warranty Period (yrs)1

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