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The NZXT H3 Flow, a white micro-ATX case with mesh front panel, side ventilation, and a visible rear cooling fan for high airflow, is displayed at an angle on a white background.
The NZXT H3 Flow micro-ATX case in white is shown, measuring 389 mm tall, 225 mm wide, and 400 mm deep. It features mesh panels and fans for high-airflow cooling.
The NZXT H3 Flow is a white micro-ATX case supporting Mini-ITX and Micro-ATX motherboards, offering a compact, space-saving design with high airflow for optimal cooling—ideal for small spaces without sacrificing performance.
The NZXT H3 Flow micro-ATX case displays a full-size GPU, highlighting support for cards up to 377mm and compatibility with 50 series GPUs. Details on GPU length and enhanced cooling support are featured below the highlighted area.
The NZXT H3 Flow micro-ATX case offers spacious cooling with support for up to a 280mm front radiator, 240mm top radiator, and up to 7 fans, providing comprehensive airflow for superior performance.
The NZXT H3 Flow micro-ATX case features blue intake and purple exhaust arrows, showcasing its high-airflow design with ultra-fine mesh on the front and PSU shroud to maximize air intake and minimize dust buildup.
The NZXT H3 Flow is a micro-ATX case featuring marked motherboard mounting zones and back-connect support, ensuring compatibility with ASUS BTF and MSI Project Zero for a clean, cable-free build and improved cooling.
The NZXT H3 Flow is a white micro-ATX case with removable side, top, and front panels, revealing cable channels and tie-down points. BUILDER-FRIENDLY DESIGN—tool-free access and high-airflow features make building easy.
The NZXT H3 Flow is a white micro-ATX case with a pre-installed F120Q (CV) 3-pin DC rear fan for exhaust. Its high-airflow design ensures excellent cooling support right out of the box.
The NZXT H3 Flow is a black micro-ATX case with a mesh front panel, side vents, and a pre-installed rear fan. Shown angled to display its spacious interior and high-airflow design.
The NZXT H3 Flow is a black micro-ATX case with a high-airflow design, measuring 389 x 225 x 400 mm. It offers space efficiency, supports large components, and ensures excellent cooling.
The NZXT H3 Flow is a micro-ATX case compatible with Mini-ITX and Micro-ATX motherboards, featuring a space-saving, high-airflow design for optimal performance in compact areas.
The NZXT H3 Flow micro-ATX case supports GPUs up to 377 mm (no front fans), 352 mm (with fans), or 317 mm (fans with radiator). Enhanced cooling ensures your components run smoothly.
A diagram of the NZXT H3 Flow micro-ATX case shows labeled mounts for up to a 280mm front radiator, 240mm top radiator, and support for up to 7 fans.
The NZXT H3 Flow micro-ATX case features a high-airflow design, with cool air entering from the front and bottom and warm air exiting from the top and rear, optimizing cooling support and reducing dust buildup.
NZXT H3 Flow micro-ATX case highlights support for back-connect motherboards (ASUS BTF, MSI Project Zero) for a clean, cable-free look and high airflow. Text below: BACK-CONNECT SUPPORT.
The NZXT H3 Flow, a black micro-ATX case, is shown with its glass side panel, front, and top covers removed to reveal its interior layout and cable management. Text: “Builder-Friendly Design. Tool-free access and high-airflow make building easy.”.
The NZXT H3 Flow is a black micro-ATX case with a pre-installed F120Q (CV) rear fan for immediate cooling, plus an extra front fan shown. Text: PRE-INSTALLED REAR FAN.

H3 Flow

5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)

Micro-ATX Airflow Case

Sale price$59.99 Regular price$79.99
$20 Off
or
Color:White
The NZXT H3 Flow, a white micro-ATX case with mesh front panel, side ventilation, and a visible rear cooling fan for high airflow, is displayed at an angle on a white background.
H3 Flow Sale price$59.99 Regular price$79.99

Overview

The H3 Flow micro-ATX case combines a space-efficient design with high-performance capability. Designed to support full-sized components, it features ultra-fine mesh panels and a ventilated PSU shroud to maintain consistent, optimized airflow throughout your build.

  • 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.
Two computer cases, one white and one black, are displayed side by side on a gradient blue and purple background. Both cases have transparent panels showcasing internal components.

Sized Down. Powered Up.

The H3 Flow delivers high-performance airflow in a space-efficient micro-ATX footprint. With fine mesh panels, a ventilated PSU shroud, and support for large components, it keeps powerful parts cool without taking over your desk.
White computer case with labeled internal dimensions: 389 mm (15.31 in) wide, 225 mm (8.86 in) deep, and 400 mm (15.75 in) tall. Mini-ITX and micro-ATX motherboard sizes are shown in purple inside the case.

Space-Saving Design

The micro-ATX form factor fits into smaller spaces, maximizing desk space without compromising on performance.
A computer case with arrows showing airflow: cool air enters from the front and bottom, and warm air exits through the top and rear. A magnified section highlights the mesh front panel.

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.
Close-up of a white computer case interior with a blue banner stating Up to 377 mm. At the bottom right, a label reads 50 Series Ready in green and black. Temperature display shows 32°C.

Full-Size GPU Support

Max length of 377 mm (no front fans), 352 mm (with fans), 317 mm (with fans & radiator).
H3 - 7-Fan Capacity

7-Fan Capacity

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

A white PC case interior with labels showing radiator support: up to 120 mm on the left, up to 240 mm at the top, and up to 280 mm on the right side of the case.

Radiator Ready

Supports a 280 mm front radiator and a 240 mm top radiator for versatile cooling setups.
A white computer case interior with various motherboard connectors and slots highlighted in purple, including power, data, and fan headers. The NZXT logo is visible on the left panel.

Back-Connect Ready

Compatible with ASUS BTF and MSI Project Zero motherboards for a clean, cable-free build.
A black PC case with its side, front, and top panels removed, showcasing the interior frame, cooling fan, and ventilation areas. The panels are displayed slightly apart from the main chassis.

Tool-Free Access

Easily remove panels for building, upgrading, or cleaning.

A white, empty NZXT computer case with cutouts for components, cable management holes, and mounting brackets visible inside. The interior is clean, minimal, and ready for PC assembly.

Easy Cable Management

Integrated cable channels and tie-down points make routing clean and simple.
Tech Specs
Height (with feet)
400 mm (15.75 in)
Width
225 mm (8.86 in)
Depth
389 mm (15.31 in)
Volume
35.0 L
Weight
4.8 kg (10.58 lb)
Enclosure Type
Micro-ATX Case
Motherboard Compatibility
Micro-ATX, Mini-ITX
Supports Rear-Connecting Motherboards (BTF, Project Zero)
Yes (Micro-ATX)
Materials
SGCC steel, clear tempered glass (white), tinted tempered glass (black)
CPU Cooler Height
170 mm
GPU Length
Up to 377 mm (without front fans) Up to 352 mm (with front fans) Up to 317 mm (with front radiator and fans)
PSU Length
Up to 185 mm
Cable Routing Space
Up to 31.5 mm
Front Radiator + Fan Thickness
Up to 63 mm
Top Radiator + Fan Thickness
Up to 70 mm
USB 3.2 Type-A
1
USB 3.2 Gen2x2 Type-C
1
Standard
4
Vertical
0
2.5"
1+2
3.5"
1
Front
2 x 120 mm / 2 x 140 mm
Top
2 x 120 mm / 2 x 140 mm
Bottom
2 x 120 mm
Rear
1 x 120 mm (1 x F120Q (CV) included)
Front
Up to 280 mm
Top
Up to 240 mm
Model
F120Q (CV)
Speed
1,350 ± 150 RPM
Airflow
60.2 CFM
Static Pressure
1.05 mmH2O
Noise
24.1 dBA
Fan Connector
3-pin
Warranty
2 years
Model Number
CC-H31FW-01 CC-H31FB-01 CC-H31FW-02 CC-H31FB-02
UPC
810074848039 810074848046 810074843508 810074843515
EAN
5056547207971 5056547207988 5056547203393 5056547203409
5.0
Rated 5.0 out of 5 stars
Based on 3 reviews
100%would recommend this product
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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3 reviews
  • R
    Ryan
    Reviewing
    H3 Flow
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Does what irs supposed to do

    Was this helpful?
  • S
    Stephon
    Reviewing
    H3 Flow
    I recommend this product
    Product Standouts Great Quality, Value for Money, Performance, Ease of use, Design
    Rated 5 out of 5 stars
    3 months ago
    Great Build

    I upgraded from a JONSBO C6 case to the H3 Flow. I've been looking forward to it for a long time. It's great, quiet and cool. I love it.

    Product QualityRated 5.0 on a scale of 1 to 5
    Value for MoneyRated 5.0 on a scale of 1 to 5
    Was this helpful?
  • CM
    Colin M.
    Verified Buyer
    Reviewing
    H3 Flow
    I recommend this product
    Product Standouts Great Quality, Value for Money, Ease of use
    Rated 5 out of 5 stars
    3 months ago
    Go 2 case - NZXT

    Easy case to build in, great quality.

    Product QualityRated 5.0 on a scale of 1 to 5
    Value for MoneyRated 5.0 on a scale of 1 to 5
    Was this helpful?

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