Choose Your Style

Q300L White Edition
This the white edition of the award-winning MasterBox Q300L, time to get a clean pure-white build!

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.

Multiple Positioning Options
The case can be put in vertical or horizontal position thanks to the inclusion of rubberized side screws

Edge-to-edge Side Panel
Show off your build through the full-size transparent side panel

Clean Routing Space
Behind the motherboard tray, 28mm of space is offered for cable management.

Excellent Thermal Performance
The open design of the perforated front, top and bottom guarantees excellent thermal performance

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.