The NZXT H3 Flow is a compact Micro-ATX case in black with perforated airflow panels and a tinted tempered glass side panel. It supports back-connect Micro-ATX motherboards, ships with one F120Q rear fan, takes radiators up to 280mm at the front and fits graphics cards up to 377mm long.
Key Features
Compact 35 L Micro-ATX chassis with perforated panels for airflow
Supports Micro-ATX and Mini-ITX, including back-connect Micro-ATX boards
1x F120Q 120mm rear fan included
Front radiator up to 280mm, top up to 240mm
Graphics cards up to 377mm and CPU coolers up to 170mm
ATX PSUs up to 185mm long
Front I/O with USB 3.2 Gen 2x2 Type-C and USB 3.2 Type-A
SGCC steel with tinted tempered glass side panel
Full Specifications
General
Brand
NZXT
Model
H3 Flow
Part Number
CC-H31FB-01
Case Type
Micro-ATX case
Colour
Black
Materials
SGCC steel, tinted tempered glass
Dust Filters
Perforated panels; removable top mesh panel
Motherboard Support
Form Factors
Micro-ATX / Mini-ITX
Back-Connect Boards
Yes (Micro-ATX)
Drive Bays
2.5" Bays
1 + 2
3.5" Bays
1
Expansion
Expansion Slots
4
Pre-installed Fans
Fans
1x F120Q 120mm (rear)
Fan Speed
1,350 ± 150 RPM
Airflow
60.2 CFM
Static Pressure
1.05 mmH2O
Noise
24.1 dBA
Connector
3-pin
Fan Support
Front
2x 120mm or 2x 140mm
Top
2x 120mm or 2x 140mm
Bottom
2x 120mm
Rear
1x 120mm (included)
Radiator Support
Front Radiator
Up to 280mm (radiator + fan up to 63mm thick)
Top Radiator
Up to 240mm (radiator + fan up to 70mm thick)
Clearances
GPU Length
377mm (no front fans), 352mm (with front fans), 317mm (with front radiator + fans)
CPU Cooler Height
Up to 170mm
PSU Length
Up to 185mm (ATX)
Cable Routing Space
Up to 31.5mm
Front I/O
Ports
1x USB 3.2 Gen 2x2 Type-C, 1x USB 3.2 Type-A
Dimensions & Weight
Dimensions
400 x 225 x 389 mm (H x W x D)
Volume
35.0 L
Net Weight
5.017 kg
Warranty
Warranty
2 years
Who Is It For?
Gamers building a compact Micro-ATX gaming PC
Builders who want a hidden-cable back-connect build
Users planning a 240mm or 280mm AIO cooler
Anyone who wants NZXT's clean design in a smaller footprint
In the Box
NZXT H3 Flow case with 1x F120Q fan pre-installed
Screws, cable straps and mounting accessories
User manual
Frequently Asked Questions
Does the NZXT H3 Flow fit ATX motherboards? No. It supports Micro-ATX and Mini-ITX boards, including back-connect Micro-ATX boards.
Can I mount a GPU vertically? No. The case has 4 expansion slots and does not support vertical GPU mounting.
What is the largest AIO cooler supported? Up to 280mm at the front and 240mm at the top.
Order the NZXT H3 Flow Black from PC PARK with warranty and fast delivery across Saudi Arabia.
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Our Milestones
2023
Expanded our product catalog with the latest gaming and professional hardware, serving thousands of satisfied customers
2024
Launched our online store and delivery service, making tech accessible to customers across Saudi Arabia
2025
Reached a major milestone in customer satisfaction with enhanced after-sales support and warranty services
2026
Continuing to grow as Saudi Arabia's trusted destination for technology, gaming, and custom PC solutions
