NZXT H2 Flow case in white with a completed PC build inside

NZXT H2 Flow case in white with a completed PC build, angled view

NZXT H2 Flow case in white with a completed PC build, side view

NZXT H2 Flow case in white, close-up of installed components

NZXT H2 Flow case in white, rear chamber with components installed

NZXT H2 Flow case in white on a desk setup

NZXT H2 Flow case in white on a desk setup, side view

NZXT H2 Flow case in white, angled front view

NZXT H2 Flow case in white, interior with panel removed

NZXT H2 Flow case in white, exploded view of panels

NZXT H2 Flow case in black with a completed PC build inside

NZXT H2 Flow case in black with a completed PC build, angled view

NZXT H2 Flow case in black with a completed PC build, side view

NZXT H2 Flow case in black, close-up of installed components

NZXT H2 Flow case in black, rear chamber with components installed

NZXT H2 Flow case in black on a desk setup

NZXT H2 Flow case in black on a desk setup, side view

NZXT H2 Flow case in black, angled front view

H2 Flow

Mini-ITX Airflow Case

$149.99

Key Specs

Dimensions (H x W x D): 435 x 181 x 263 mm (17.1 x 7.1 x 10.4 in)
Volume: 20.7 L
Motherboard Support: Mini-ITX
GPU Clearance: Up to 331 mm (13 in)
CPU Cooler Clearance: Up to 75 mm (3 in)
Front I/O: 2x USB 3.2 Type-A, 1x USB 3.2 Gen 2x2 Type-C, 1x headset jack

Inside the Box

H2 Flow
F120Q (Case Version) x2
Installation Accessories
User Guide

Warranty & Return Policy

Warranty coverage — See NZXT warranty terms by product
Returns & exchanges — NZXT components and accessories are sold through authorized retailers. Start a return or exchange with the retailer you purchased from.
Warranty service — Submit a request to NZXT Support. Proof of purchase from an authorized NZXT retailer is required.

Resources

Manuals & Documentation

Overview

The H2 Flow is a mighty, compact vertical mini-ITX case designed to save space while showcasing top-tier components. Smart cable management, tool-less access, dual top fans, and a premium PCIe 5.0 riser cable make the building experience fast and simple.

Liquid Cooling Support: Handles up to a 280 mm radiator, ensuring lower temperatures so system performance consistently thrives.
331 mm GPU Capacity: Fits modern graphics cards with ease, delivering top-tier power in a clean, compact 20.7 L footprint.
Ultra-Fine Mesh Panels: Mesh on all sides maximizes air intake while filtering dust, keeping core components clear and running optimally.
Hybrid Glass-and-Mesh Side: Unique two-piece panel features tempered glass and mesh, displaying the build without compromising thermal efficiency.
Two F120Q CV (3-pin DC) Fans Included: Two pre-installed 120 mm fans on the top deliver convenient and immediate exhaust.
Tool-Less Access Panels: Panels pop off without tools, making every upgrade, cleaning session, or adjustment quick and completely seamless.
Integrated Cable Routing: Built-in routing points and included Velcro straps simplify organization, leading to a much tidier look and superior internal airflow.
PCIe 5.0 Riser Cable: A premium riser cable is included, making vertical GPU mounting easy while providing reliable, lightning-fast bandwidth.

Mighty View. Mini Case.

The H2 Flow redefines compact power by visualizing it, packing high-end components and liquid cooling support into a sleek vertical design that frees your desk space. Every detail is engineered to simplify your build and keep your system cool and quiet.

Compact Size, Full Power

The 20.7 L vertical layout saves desk space, fitting full-power features in a footprint smaller than a standard sheet of paper.

Two F120Q Fans

Get convenient, quiet airflow with two F120Q CV (3-pin DC) 120 mm fans pre-mounted and ready to work on the top panel.

PCIe 5.0 Riser Cable

An included premium PCIe 5.0 riser cable ensures clean GPU mounting while providing reliable, lightning-fast bandwidth.

Cooling, in Full View

Supports up to a 280 mm radiator, showcasing LCD coolers through a hybrid glass-and-mesh panel.

Spacious GPU Support

Accommodating graphics cards up to 331 mm, it delivers strong performance and steady high frame rates, all while maintaining efficient airflow and room to spare.

High-Airflow Panels

Ultra-fine mesh ensures steady airflow while keeping dust out for smooth, reliable performance.

Effortless Building

Building and maintenance are made simple with tool-less panels and smart wire management interior.

Tech Specs

Enclosure Type

Small form factor case

Motherboard Support

Mini-ITX

Back-Connect Motherboard Support

Power Supply Type

SFX, SFX-L

Materials

Steel, tempered glass

Dimensions (H x W x D)

435 x 181 x 263 mm (17.1 x 7.1 x 10.4 in)

Volume

20.7 L

Weight

4.55 kg (10.0 lb)

CPU Cooler Height

Up to 75 mm (3 in)

GPU Length

Up to 331 mm (13 in)

GPU Thickness

Up to 65 mm (2.6 in)

GPU Width

Up to 150 mm (5.9 in)

PSU Length

Up to 130 mm (5.1 in)

Front Radiator + Fan Thickness

Up to 60 mm (2.4 in)

USB 3.2 Type-A

USB 3.2 Gen 2x2 Type-C

Headset Jack

Expansion Slots

3 (vertical)

2.5" Drive Bays

2 (Up to 8.5 mm)

3.5" Drive Bays

Front Fans

2 x 120 mm / 2 x 140 mm

Top Fans

2 x 120 mm

Front Radiator

Up to 280 mm

Model

F120Q (Case Version)

Quantity

Speed

1,350 ± 150 RPM

Airflow

60.2 CFM

Static Pressure

1.05 mmH₂O

Noise Level

24.1 dBA

Fan Connector

3-pin

Fixed Velcro Straps

Yes

Included Zip Ties

Yes

Compatibility

PCIe Gen 5.0 x16

Length

260 mm

Warranty

2 years

Model Number

CI-H21FW-01 (White) / CI-H21FB-01 (Black)

UPC

810074848398 (White) / 810074848404 (Black)

EAN

5056547208794 (White) / 5056547208800 (Black)

Frequently Asked Questions

Can I install a full-sized graphics card?

Yes. The NZXT H2 Flow supports graphics cards up to 331 mm in length and 65 mm thick (3-slot), including cards such as the NVIDIA GeForce RTX 5090 Founders Edition (304 mm) and AMD Radeon RX 9070 XT models (288–330 mm).

GPU clearance is measured using a standard graphics card profile. When installing front-mounted AIO cooling with a larger tube cover—such as the NZXT Kraken Elite—available GPU width clearance may be reduced.

Some modern GPUs feature wider coolers, extended shrouds, or repositioned power connectors that require additional clearance. Radiator thickness, tube cover size, and breakout cable placement can also affect fitment. As a result, some wider GPUs may contact the radiator, tubing, or cables even if their listed length is under 331 mm. Please check your GPU’s width dimensions and plan accordingly. Alternatively, the radiator can be installed at the front of the case with the fans positioned behind it in a pull configuration, which may provide additional clearance around the radiator fittings and tubing.

Does the H2 Flow support air cooling for the CPU?

Although the H2 Flow is designed primarily for liquid coolers with LCD screens—supporting front-mounted radiators up to 280 mm—a low-profile air cooler can also be used. Please note the 75 mm CPU cooler height clearance, and allow at least 10 mm of space between the top of the cooler and the glass panel.