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NZXT H3 Flow Black Micro-ATX PC Case

NZXT H3 Flow Black Micro-ATX PC Case

SKU: CC-H31FB-01
Availability:
in stock
In stock
€61,95
€61,95 - €61,95
€61,95 - €61,95
€61,95
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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.
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

Dimensions

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)

General

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)

Clearance

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

Front I/O Ports

USB 3.2 Type-A
1
USB 3.2 Gen2x2 Type-C
1

Expansion Slots

Standard
4
Vertical
0

Drive Bays

2.5"
1+2
3.5"
1

Fan Support

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)

Radiator Support

Front
Up to 280 mm
Top
Up to 240 mm

Fan Specs

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

Warranty
2 years

Product Info

Model Number
CC-H31FB-01
UPC
810074848046
EAN
5056547207988