CM MasterBox MB311L ARGB Airflow with Dual ARGB Fans

Fine Mesh Front Panel: Cooler Master’s Fine Mesh design on the front panel is proven to provide proficient airflow while filtering out dust.
Mesh Intakes: Large, mesh intakes span each side of the front panel to provide additional airflow to system.
Dual ARGB Fans: Dual pre-installed 120mm ARGB fans with splitter can be managed by the motherboard, to create a customized ARGB lighting system. Motherboard Support - Micro ATX, Mini ITX
Tempered Glass: Hardware, custom-loop cooling, or the pure pride of showing off the build in panoramic view through an edge-to-edge tempered glass side panel.
Adaptable Drive Cage: The drive cage is movable, able to shift toward the front to accommodate for PSU space, backwards to provide additional radiator space, or even completely removed.
Versatile Cooling Options: Support a total of six 120mm fans, front, top and rear radiator placement to ensure no compromise on cooling performance.

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Availability:: Out Of Stock
Product Code:: MCB-B311L-KGNN-S01
Brand:: Cooler Master

JOD 55.00 JOD 49.00

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Make It Yours.

We're all about the things that make building a PC such a rewarding experience. The sense of achievement. The joy of making and creating something uniquely yours in form and function and, of course, the thrill of bringing your creation to life without melting your components.

Cooler Master MasterBox MB311L ARGB

Play It Cool

The MasterBox MB311L ARGB is a Micro-ATX airflow PC case with two ARGB fans and made to be built with the latest gaming hardware. The front panel’s façade is made entirely of Fine Mesh, placed between two honeycomb vents on either side to maximize airflow. Since running the latest games, smoothly, means keeping the latest hardware efficiently cooled, top panel ventilation offers the option to add even more cooling hardware—if nothing is mounted, the top panel acts as passive ventilation.

Fine Mesh Front Panel
Mesh Intakes
Dual ARGB Fans
Optimized Airflow
Tempered Glass Side Panel
Adaptable Drive Cage
Roomy Interior
ARGB Controller

Mesh Front Intakes

Open Airflow design fine mesh, and a mesh intakes spanning each side of spanning the front panel.

Dual ARGB Fans

Dual 120mm ARGB fans with splitter can be managed by the motherboard, to create a customized ARGB lighting system.


Tempered Glass Side Panel Hardware, custom-loop cooling, or the pure pride of showing off the build in panoramic view through an edge-to-edge tempered glass side panel.	Roomy Interior The spacious interior fits all standard ITX and Micro-ATX motherboards configuration.	Optimized Airflow Airflow is optimized by a collaboration between the front Fine Mesh and Mesh Intakes, with additional top panel ventilation, and rear exhaust.

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CM MasterBox MB311L ARGB Airflow with Dual ARGB Fans