Are You TUF Enuf?

MasterBox Q300L TUF Gaming Edition

  • TUF Gaming Styling
  • High Flexibility for System Building
  • Minimized Dimensions with ATX PSU Support
  • Clean Routing Space
  • Excellent Thermal Performance
  • Edge-to-Edge Transparent Side Panel
  • Vertical and Horizontal Position

TUF Gaming Styling

The MasterBox Q300L joins the TUF Gaming Alliance, carrying the TUF marks on both magnetic filters and both side panels.


The magnetic dust filters feature a unique TUF design. Magnets allow quick removal and installation for easy cleaning and maintenance of the dust filters.

Clean Routing Space

28mm of space behind the motherboard tray offers ample room for cable management.

High Flexibility for System Building

The case can be oriented vertically or horizontally while retaining easy access to the I/O.
Rubberized screws also function as feet to supplement different orientations.

Transparent Side Panel

Show off your build through the edge-to-edge transparent side panel.

Excellent Thermal Performance

The open design of the perforated front, top and bottom guarantees excellent thermal performance potential.
The front supports up to two 140mm fans and up to a 240mm radiator. The rear supports a 120mm fan or radiator,
the top two 120mm fans and the bottom one 120mm fan.
All to ensure you don't have to compromise on performance.


The MasterBox Q300L TUF Edition 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.

Product Name MasterBox Q300L TUF
Product Number MCB-Q300L-KANN-TUF
Available Color Black
Materials Steel, Plastic
Dimensions 387 (L) x 230 (W) x 381 (H) mm
Motherboard Support Micro-ATX, Mini-ITX
Expansion Slots 4
5.25" Drive Bays 0
3.5" HDD Drive Bays 1
2.5" SSD Drive Bays 2
I/O Port USB 3.0 x 2, Audio In / Out
Pre-installed Fan(s) - Front N/A
Pre-installed Fan(s) - Rear 120mm x 1
Fan Support - Front 120 / 140mm x 2
Fan Support - Top 120mm x 2
Fan Support - Rear 120mm x 1
Fan Support - Bottom 120mm x 1
Radiator Support - Front 120mm x 1 / 240mm x 1
Radiator Support - Rear 120mm x 1
Clearances - CPU Cooler 159mm
Clearances - PSU 160mm
Clearances - GFX 360mm
Cable Routing - Behind MB Tray 28mm
Dust Filters Bottom
Power Supply Support Bottom mount, ATX PS2
EAN Code 4719512077931
UPC Code 884102050428