Versatile Micro-ATX Case
The Cooler Master MasterBox Q300L is designed for gamers and professionals seeking a space-saving yet stylish solution for their custom builds. With a modular design, it allows for easy installation and maintenance of components.
- Supports CPU coolers up to 157mm in height
- Offers multiple fan mounting options for optimized airflow
- Includes a transparent side panel to showcase your build
Whether you’re building a high-performance gaming rig or a workstation for video editing, the Q300L provides the flexibility and functionality you need. Its dust filters help keep your components clean, ensuring longevity and reliability.



Jamie R.
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Great value for a compact case! Excellent airflow.
Alex S.
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Perfect fit for my micro-ATX build, love the design!
Chris T.
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Decent case, but could use more cable management options.