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Fractal Design Define C Mid-Tower Case (Window)

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Description & Details


  • ATX, Micro-ATX, and Mini-ITX Support
  • Steel Frame & Tempered Glass Side Panel
  • 2 x 2.5/3.5" Drive Bays
  • 3 x 2.5" Drive Mounts
  • 7 x Expansion Slots

Fractal Design Define C Mid-Tower Case (Window) Description

Keep your build clean, cool, and quiet with the windowed Define C Mid-Tower Case from Fractal Design. Featuring an open-air design, this case supports ATX, Micro-ATX, and Mini-ITX motherboards while delivering plenty of airflow for your components. In addition to two bays accommodating 2.5 and 3.5" drives, the Define C also sports an additional three 2.5" drive mounts on the back of the motherboard tray. Furthermore, users can take advantage of seven expansion slots, supporting GPUs up to 12.4" long with the front case fan installed. This case also supports CPU coolers up to 6.77" and ATX power supplies up to 6.88".

Utilizing a steel frame and tempered glass side panel, the Fractal Define C incorporates sound-dampening materials for passive noise reduction. Two 120mm fans come preinstalled, and the case can fit up to five additional user-installed 120 or 140mm fans. Liquid cooling support also allows users to swap out fans for radiators, with sizes up to 360, 240, and 120mm supported on the front, top, and rear of the case. The front panel of the Define C also incorporates I/O ports, including two USB 3.1 Gen 1 Type-A ports and individual 3.5mm audio input and output ports.


  • 1 x Fractal Design Define C Mid-Tower Case (Window)
  • 1 x Optional Top Filter
  • 1 x Limited 2-Year Warranty


Codes 0817301015684 (EAN)

Product Images

Fractal Design Fractal Design Define C Mid-Tower Case (Window) 1
Fractal Design Fractal Design Define C Mid-Tower Case (Window) 2
Fractal Design Fractal Design Define C Mid-Tower Case (Window)

Product Data


Motherboard SupportATX, Micro-ATX, Mini-ITX
External Drive BaysNone
Internal Drive Bays2 x 2.5/3.5"
Additional Drive Mounting3 x 2.5" (Motherboard Tray)
Expansion Slots7 x Full Height
Maximum GPU Length12.40" / 315 mm
CPU Cooler Height6.77" / 172 mm
Supported PSU SizeATX
Maximum PSU Length6.89" / 175 mm


Fan Mounting (Front)3 x 120 mmOr2 x 140 mm
Fan Mounting (Rear)1 x 120 mm
Fan Mounting (Side)None
Fan Mounting (Top)2 x 120 mmOr2 x 140 mm
Fan Mounting (Bottom)1 x 120 mm
Fans Included (Front)1 x 120 mm (1200 rpm)
Fans Included (Rear)1 x 120 mm (1200 rpm)
Fans Included (Side)None
Fans Included (Top)None
Fans Included (Bottom)None
Maximum Radiator Size (Front)360 mm
Maximum Radiator Size (Rear)120 mm
Maximum Radiator Size (Top)240 mm
Fans Included (Internal)None
Noise Level19.4 dBA
Filter LocationsBottom, Front, Top


Connections2 x USB Type-A (USB 3.1 / USB 3.2 Gen 1)
Media Card SlotsNone
Audio Connections1 x 3.5 mm Input1 x 3.5 mm Output
Display ConnectionsNone


Windowed PanelYes
MaterialTempered Glass, Steel
Built-In LightingNo
Cable Management Space0.59" / 15 mm
Dimensions (W x H x D)8.54 x 17.83 x 16.26" / 217 x 453 x 413 mm
Weight15.87 lb / 7.2 kg
Warranty LengthLimited 2-Year Warranty

Packaging Info

Package Weight18.615 lb
Box Dimensions (LxWxH)21 x 19.3 x 11.8"
External product information

Disclaimer: The information below is provided by various external sources and should be used as a guide only.

Detailed product information


Form factorMidi Tower
LED indicatorsY
Product colourBlack
Cable managementY
Supported motherboard form factorsATX, ITX, Mini-ATX
Anti-dust filterY
Number of 3.5" bays2
Side windowY
Maximum CPU cooler height17.2 cm
Maximum graphics card length31.5 cm
Number of expansion slots7
Maximum PSU length17.5 cm
Number of 2.5" bays5

Weight & dimensions

Weight7.2 kg
Height453 mm
Width217 mm
Depth413 mm

Packaging data

Package weight8.7 kg
Package depth543 mm
Package height484 mm
Package width295 mm

Ports & interfaces

Audio inputY
Audio outputY
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2

Packaging content



Front fans installed1x 120 mm
Number of front fans supported (max)3
Front fans diameters supported120,140 mm
Rear fans diameters supported120 mm
Top fans diameters supported120,140 mm
Bottom fans diameters supported120 mm
Number of rear fans supported (max)1
Number of top fans supported (max)2
Number of bottom fans supported (max)1
Rear fans installed1x 120 mm
Rear radiator fan sizes supported120 mm
Front radiator fan sizes supported120,140,240,280,360 mm
Top radiator fan sizes supported120,240 mm


Supported HDD sizes2.5,3.5"

Power supply

Power supply includedN
Supported power supply form factorsATX

Other features

Easy to customizeY
Harmonized System (HS) code84733080
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Fractal Design Define C Mid-Tower Case (Window)

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