NZXT H9 H3 Flow Midi Tower White

SKU
CC-H31FW-01
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In Stock:171 available
Mid-tower, Micro-ATX/Mini-ITX, 2.5" x 1+2, 3.5" x 1, 225 x 389 x 400 mm, White
  • Space-Saving Size: A space-efficient micro-ATX chassis that accommodates high-performance components without compromise.
  • High-Airflow Design: Ultra-fine steel mesh panels and a ventilated PSU shroud maximize airflow while effectively filtering out dust.
  • Extensive Cooling Support: Supports up to a 280 mm radiator in the front, a 240 mm radiator on top, and up to seven fans for powerful, customizable cooling performance.
  • Full-Size GPU Support: Fits graphics cards up to 377 mm (without front fans), 352 mm (with front fans), or 317 mm (with front radiator and fans installed).
  • Pre-Installed Rear Fan: Includes one F120Q (CV) fan at the rear to provide efficient exhaust airflow straight out of the box. CV = Case Version (3-pin DC)
  • Simplified Cable Management: Integrated cable channels and multiple tie-down points make it easy to route and organize cables for a clean, organized build.
  • Back-Connect Motherboard Compatible: Ready for rear-connector motherboards like ASUS BTF and MSI Project Zero, enabling a clean, cable-free aesthetic.
  • Tool-Free Access: Removable top, front, and side panels allow for easy upgrades and cleaning—no tools required.
More Information
SKU CC-H31FW-01
EAN 5056547207971
Manufacturer NZXT
Availability In Stock
Product Family H9
Space-Saving Design
The micro-ATX form factor fits into smaller spaces, maximizing desk space without compromising on performance.

Optimized Airflow
Ultra-fine mesh on the front, top, and sides enhances cooling while filtering dust. The ventilated PSU shroud optimizes intake from bottom-mounted fans.

Full-Size GPU Support
Max length of 377 mm (no front fans), 352 mm (with fans), 317 mm (with fans & radiator).

7-Fan Capacity
Supports up to 140 mm fans (two front, two top) and 120 mm fans (two bottom, one rear).

Radiator Ready
Supports a 280 mm front radiator and a 240 mm top radiator for versatile cooling setups.

Back-Connect Ready
Compatible with ASUS BTF and MSI Project Zero motherboards for a clean, cable-free build.

Tool-Free Access
Easily remove panels for building, upgrading, or cleaning.

Easy Cable Management
Integrated cable channels and tie-down points make routing clean and simple.
Technical details
Number of 3.5" bays1
Number of 2.5" bays3
Supported motherboard form factorsmicro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Side windowYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length37.7 cm
Maximum PSU length18.5 cm
TypePC
Form factorMidi Tower
Material
MaterialMesh, SGCC, Tempered glass
Ergonomics
Cable managementYes
Design
MaterialMesh, SGCC, Tempered glass
Number of 3.5" bays1
Number of 2.5" bays3
Supported motherboard form factorsmicro ATX, Mini-ITX
Side windowYes
Cable managementYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length37.7 cm
Maximum PSU length18.5 cm
TypePC
Form factorMidi Tower
Tempered glass panel(s)Yes
Power supply
Number of power supply units1
Ports & interfaces
USB 3.2 Gen 2x2 Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity1
Combo headphone/mic portYes
Cooling
Front radiator sizes supported280 mm
Top radiator sizes supported240 mm
Number of front fans supported (max)2
Front fans diameters supported120,140 mm
Rear fans installed1x 120 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)2
Top fans diameters supported120,140 mm
Number of bottom fans supported (max)2
Bottom fans diameters supported120 mm
Storage
Supported HDD sizes2.5,3.5"
Weight & dimensions
Width225 mm
Depth389 mm
Height400 mm
Weight4.8 kg

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Manufacturer
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Specification
Technical details
Number of 3.5" bays1
Number of 2.5" bays3
Supported motherboard form factorsmicro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Side windowYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length37.7 cm
Maximum PSU length18.5 cm
TypePC
Form factorMidi Tower
Material
MaterialMesh, SGCC, Tempered glass
Ergonomics
Cable managementYes
Design
MaterialMesh, SGCC, Tempered glass
Number of 3.5" bays1
Number of 2.5" bays3
Supported motherboard form factorsmicro ATX, Mini-ITX
Side windowYes
Cable managementYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length37.7 cm
Maximum PSU length18.5 cm
TypePC
Form factorMidi Tower
Tempered glass panel(s)Yes
Power supply
Number of power supply units1
Ports & interfaces
USB 3.2 Gen 2x2 Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity1
Combo headphone/mic portYes
Cooling
Front radiator sizes supported280 mm
Top radiator sizes supported240 mm
Number of front fans supported (max)2
Front fans diameters supported120,140 mm
Rear fans installed1x 120 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)2
Top fans diameters supported120,140 mm
Number of bottom fans supported (max)2
Bottom fans diameters supported120 mm
Storage
Supported HDD sizes2.5,3.5"
Weight & dimensions
Width225 mm
Depth389 mm
Height400 mm
Weight4.8 kg
Design
Volume38.24 L
Anti-dust filterYes
MaterialMesh, Plastic, Steel
Number of 3.5" bays2
Number of 2.5" bays4
Supported motherboard form factorsmicro ATX, Mini-ITX
Side windowYes
Illumination colourMulti
IlluminationYes
Product colourBlack
Number of expansion slots4
Maximum CPU cooler height16.6 cm
Maximum graphics card length34.4 cm
Maximum PSU length32.5 cm
TypePC
Form factorMini Tower
Technical details
Number of 3.5" bays2
Number of 2.5" bays4
Supported motherboard form factorsmicro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Side windowYes
Product colourBlack
Number of expansion slots4
Maximum CPU cooler height16.6 cm
Maximum graphics card length34.4 cm
Maximum PSU length32.5 cm
TypePC
Form factorMini Tower
Harmonized System (HS) code84733080
Material
MaterialMesh, Plastic, Steel
Indication
Illumination colourMulti
IlluminationYes
Power supply
Supported power supply form factorsATX
Power supply includedNo
Power supply locationBottom
Ports & interfaces
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
Audio inputYes
Audio outputYes
Cooling
Front radiator sizes supported120,240,140,280 mm
Rear radiator sizes supported120 mm
Top radiator sizes supported120,140,240,280 mm
Front fans installed2x 120 mm
Number of front fans supported (max)3
Front fans diameters supported120,140 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Storage
HDD/SSD combo cageYes
Supported HDD sizes2.5,3.5"
Weight & dimensions
Volume38.24 L
Width210 mm
Depth366.5 mm
Height210 mm
Weight5.85 kg
Packaging data
Package width280 mm
Package height493 mm
Package depth493 mm
Package weight7.1 kg
Logistics data
Harmonized System (HS) code84733080
Other features
Volume38.24 L
Harmonized System (HS) code84733080
Technical details
Number of 5.25" bays2
Number of 3.5" bays2
Number of 2.5" bays4
Supported motherboard form factorsmicro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Side windowYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length36.5 cm
Maximum PSU length15 cm
TypePC
Form factorMini Tower
Harmonized System (HS) code84733080
Material
MaterialSteel, Tempered glass
Indication
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Ergonomics
Cable managementYes
On/off buttonYes
Design
Anti-dust filterYes
MaterialSteel, Tempered glass
Number of 5.25" bays2
Number of 3.5" bays2
Number of 2.5" bays4
Supported motherboard form factorsmicro ATX, Mini-ITX
Side windowYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Cable managementYes
Product colourWhite
Number of expansion slots4
Maximum CPU cooler height17 cm
Maximum graphics card length36.5 cm
Maximum PSU length15 cm
TypePC
Form factorMini Tower
On/off buttonYes
Tempered glass panel(s)Yes
RGB control buttonYes
Power supply
Supported power supply form factorsATX
Power supply includedNo
Ports & interfaces
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
Audio inputYes
Audio outputYes
USB 2.0 ports quantity0
Cooling
Front radiator sizes supported240 mm
Rear radiator sizes supported120 mm
Top radiator sizes supported240 mm
Front fans installed2x 120 mm
Number of front fans supported (max)2
Front fans diameters supported120,140 mm
Rear fans installed1x 120 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)2
Top fans diameters supported120,140 mm
Storage
Supported HDD sizes2.5,3.5"
SSD form factor2.5"
Weight & dimensions
Width215 mm
Depth432 mm
Height393 mm
Weight5.96 kg
Packaging data
Package width293 mm
Package height470 mm
Package depth514 mm
Package weight7.24 kg
Logistics data
Harmonized System (HS) code84733080
Other features
Harmonized System (HS) code84733080
Technical details
Number of 5.25" bays0
Number of 3.5" bays2
Number of 2.5" bays2
Number of internal 3.5" bays2
Supported motherboard form factorsmicro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Suitable forGaming
Side windowYes
Reset buttonYes
Product colourBlack, Transparent
TypePC
Form factorMidi Tower
Material
MaterialTempered glass
Indication
LED indicatorsYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Ergonomics
Reset buttonYes
LED indicatorsYes
On/off buttonYes
Design
Anti-dust filterYes
MaterialTempered glass
Number of 5.25" bays0
Number of 3.5" bays2
Number of 2.5" bays2
Number of internal 3.5" bays2
Supported motherboard form factorsmicro ATX, Mini-ITX
Suitable forGaming
Side windowYes
Reset buttonYes
LED indicatorsYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Product colourBlack, Transparent
TypePC
Form factorMidi Tower
On/off buttonYes
Tempered glass panel(s)Yes
Power supply
Power supply includedNo
Power supply locationBottom
Ports & interfaces
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity1
Audio inputYes
Audio outputYes
USB 2.0 ports quantity2
Cooling
Front fans installed3x 120 mm
Number of front fans supported (max)3
Front fans diameters supported120 mm
Rear fans installed1x 120 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)2
Top fans diameters supported120 mm
Storage
HDD/SSD combo cageYes
Supported HDD sizes2.5,3.5"
Weight & dimensions
Width388 mm
Depth200 mm
Height423 mm
Weight4.14 kg
Packaging data
Package weight5.03 kg
Technical details
Number of 5.25" bays0
Number of 3.5" bays2
Number of 2.5" bays3
Number of internal 3.5" bays2
Supported motherboard form factorsATX, micro ATX, Mini-ITX
Supported HDD sizes2.5,3.5"
Suitable forGaming
Side windowYes
Reset buttonYes
Product colourBlack, Transparent
TypePC
Form factorMidi Tower
Material
MaterialTempered glass
Indication
LED indicatorsYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Ergonomics
Reset buttonYes
LED indicatorsYes
On/off buttonYes
Design
Anti-dust filterYes
MaterialTempered glass
Number of 5.25" bays0
Number of 3.5" bays2
Number of 2.5" bays3
Number of internal 3.5" bays2
Supported motherboard form factorsATX, micro ATX, Mini-ITX
Suitable forGaming
Side windowYes
Reset buttonYes
LED indicatorsYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Product colourBlack, Transparent
TypePC
Form factorMidi Tower
On/off buttonYes
Tempered glass panel(s)Yes
Power supply
Power supply includedNo
Power supply locationBottom
Ports & interfaces
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
Audio inputYes
Audio outputYes
USB 2.0 ports quantity0
Cooling
Front fans installed3x 120 mm
Number of front fans supported (max)3
Front fans diameters supported120,140 mm
Rear fans installed1x 120 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)2
Top fans diameters supported120,140 mm
Storage
HDD/SSD combo cageYes
Supported HDD sizes2.5,3.5"
Weight & dimensions
Width214 mm
Depth409 mm
Height485 mm
Weight5.26 kg
Packaging data
Package weight6.24 kg
Design
Volume50 L
Anti-dust filterYes
MaterialMesh, Tempered glass, Plastic, Steel
Number of 3.5" bays2
Number of 2.5" bays3
Supported motherboard form factorsATX, micro ATX, SSI CEB, Mini-ITX, EATX
Side windowYes
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Cable managementYes
Product colourWhite
Number of expansion slots7
Maximum CPU cooler height16.5 cm
Maximum graphics card length41 cm
Maximum PSU length20 cm
TypePC
Form factorMidi Tower
Technical details
Number of 3.5" bays2
Number of 2.5" bays3
Supported motherboard form factorsATX, micro ATX, SSI CEB, Mini-ITX, EATX
Supported HDD sizes2.5,3.5"
Side windowYes
Product colourWhite
Number of expansion slots7
Maximum CPU cooler height16.5 cm
Maximum graphics card length41 cm
Maximum PSU length20 cm
TypePC
Form factorMidi Tower
Material
MaterialMesh, Tempered glass, Plastic, Steel
Indication
Illumination locationCase fans
Illumination colourMulti
IlluminationYes
Ergonomics
Cable managementYes
Power supply
Supported power supply form factorsATX
Power supply includedNo
Power supply locationBottom
Ports & interfaces
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
Audio inputYes
Audio outputYes
Cooling
Front radiator sizes supported140,240,360,120,280 mm
Rear radiator sizes supported120 mm
Top radiator sizes supported120,240,360,140,280 mm
Front fans installed3x 120 mm
Number of front fans supported (max)3
Front fans diameters supported120,140 mm
Number of rear fans supported (max)1
Rear fans diameters supported120 mm
Number of top fans supported (max)3
Top fans diameters supported140,120 mm
Storage
Supported HDD sizes2.5,3.5"
Weight & dimensions
Volume50 L
Width210 mm
Depth499 mm
Height500 mm
Weight7.7 kg
Packaging data
Package width290 mm
Package height584 mm
Package depth558 mm
Package weight9.2 kg
Other features
Volume50 L
Form factor
Midi Tower
Mini Tower
Mini Tower
Midi Tower
Midi Tower
Midi Tower
Product colour
White
Black
White
N/A
N/A
White
USB 2.0 ports quantity
N/A
N/A
0
2
0
N/A
Number of 5.25" bays
N/A
N/A
2 to 3
N/A
N/A
N/A
Number of 3.5" bays
1 to 2
2 to 3
2 to 3
2 to 3
2 to 3
2 to 3
Power supply included
N/A
N
N
N
N
N
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
1
2
2
1
2
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
N/A
N/A
0
0
0
N/A
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity
N/A
N/A
0
0
0
1
Type
PC
PC
PC
PC
PC
PC