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Patterned Magnetic Dustfilters
Special pattern on the dust filter creates a unique outlook for the chassis.
Choose Your Style
MasterBox Q300L
The MasterBoxQ300L is your straightforward option in the lineup of the brand new MasterBoxQ-series from Cooler Master.
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Modular I/O Panel
The I/O panel can be adjusted to six different locations. On both side of the body you can install the I/O panel at the front, top or bottom.
Edge-To-Edge Side Panel
Show off your build through the full size transparent side panel.
Multiple Positioning Options
The case can be put in vertical or horizontal position.
Excellent Thermal Performance
The open design of the perforated front, top and bottom guarantees excellent thermal performance
Clean Routing Space
Behind the motherboard tray, 28mm of space is offered for cable management.
Fan and Radiator Support
The front supports up to two 140mm fans and up to a 240mm radiator. The rear supports a 120mm fan or radiator and the top two 120mm fans. All to ensure you don't have to compromise on performance.
Main Components Clearance
The MasterBox Q300L case supports CPU coolers up to a height of 159mm, graphics cards up to a length of 360mm, and power supplies up to a length of 160mm.
Tech specifications
Discover technical info about the product
