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H3 Flow

Micro-ATX Airflow Case

4.8

Rated 4.8 out of 5 stars

4.8 Stars (5 Reviews)

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Sale price$49.99Regular price$79.99

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Color:White

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Ships by May 29th

Complete With

F240 RGB CoreSale priceStarting at $29.99Regular price$54.99

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Control HubSale price$42.49Regular price$49.99

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Inside the Box

H3 Flow x 1
Pre-installed F120Q (CV) x 1
Installation accessories x 1
User guide x 1

Warranty & Return Policy

NZXT Product Warranty Length click here
NZXT.com Store Returns/Exchange Policy

Eligible products qualify for a refund or exchange only with an authorized RMA number and the item is returned to the NZXT.com Store inventory within 30 days of purchase. Returns are not allowed beyond 30 days of the purchase date.

The NZXT.com Store reserves the right to deny any return or exchange. Refunds will be credited to the original method of payment. To initiate a return, simply submit a request.

Resources

Manuals & Documentation

Your Prepay and Save Options

Choose the plan that works best for you.

Month-to-Month

Cancel and return anytime with no fees. This option provides maximum flexibility with no long-term obligations.

Prepaid Terms

Prepay for a multi-month term (3, 6, 12 months) and lock in a lower effective monthly rate.

When your term ends, you have simple options:

Month-to-Month: By default, your subscription automatically converts to the month to month rate requiring no action from you.

Prepay Again: Alternatively, you can choose to prepay for another 3, 6, or 12 month term.

End Subscription: Cancel and return with no fees.

H3 FlowSale price$49.99Regular price$79.99

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H3 FlowSale price$49.99Regular price$79.99

H3 Flow

4.8

Rated 4.8 out of 5 stars

4.8 Stars (5 Reviews)

Sale price$49.99Regular price$79.99

Color:White

WhiteBlack

Decrease quantityIncrease quantity

Add to Cart

Your Prepay and Save Options

Choose the plan that works best for you.

Month-to-Month

Cancel and return anytime with no fees. This option provides maximum flexibility with no long-term obligations.

Prepaid Terms

Prepay for a multi-month term (3, 6, 12 months) and lock in a lower effective monthly rate.

When your term ends, you have simple options:

Month-to-Month: By default, your subscription automatically converts to the month to month rate requiring no action from you.

Prepay Again: Alternatively, you can choose to prepay for another 3, 6, or 12 month term.

End Subscription: Cancel and return with no fees.

View details

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.

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.

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.

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

USB 3.2 Gen2x2 Type-C

Expansion Slots

Standard

Vertical

Drive Bays

2.5"

1+2

3.5"

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

2 years

Product Info

Model Number

CC-H31FW-01 CC-H31FB-01 CC-H31FW-02 CC-H31FB-02

UPC

810074848039 810074848046 810074843508 810074843515

EAN

5056547207971 5056547207988 5056547203393 5056547203409

4.8

Rated 4.8 out of 5 stars

Based on 5 reviews

100% would recommend this product

5 Rated out of 5 stars

Total 5 star reviews: 4

4 Rated out of 5 stars

Total 4 star reviews: 1

3 Rated out of 5 stars

Total 3 star reviews: 0

2 Rated out of 5 stars

Total 2 star reviews: 0

1 Rated out of 5 stars

Total 1 star reviews: 0

Reviews 5(tab expanded) Questions 18(tab collapsed)

Filters

5 reviews

Sort Most RecentOldestMost HelpfulPhotos & VideosHighest RatingLowest RatingLeast Helpful

Chris M.

Verified Buyer

I recommend this product

Product Standouts Great Quality, Value for Money, Ease of use, Design

Rated 5 out of 5 stars

2 weeks ago

Fantastic MATX case

The design of this case is great. It is well thought out and very easy to work with in it. Built in cable routing and snap on panels are most welcome.

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Was this helpful?

Yes, this review from Chris M. was helpful. 0 people voted yesNo, this review from Chris M. was not helpful. 0 people voted no

Alex M.

Verified Buyer

I recommend this product

Product Standouts Value for Money, Ease of use, Design

Rated 4 out of 5 stars

2 months ago

Compact Case, Big Airflow

I’m very happy with it. it was easy to build in very roomy, has great airflow, and looks clean. Great for the price

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Was this helpful?

Yes, this review from Alex M. was helpful. 0 people voted yesNo, this review from Alex M. was not helpful. 1 person voted no

Ryan

I recommend this product

Rated 5 out of 5 stars

6 months ago

5 Stars

Does what irs supposed to do

Read MoreRead more about this review

Was this helpful?

Yes, this review from Ryan was helpful. 1 person voted yesNo, this review from Ryan was not helpful. 1 person voted no

Stephon

I recommend this product

Product Standouts Great Quality, Value for Money, Performance, Ease of use, Design

Rated 5 out of 5 stars

8 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.

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Was this helpful?

Yes, this review from Stephon was helpful. 0 people voted yesNo, this review from Stephon was not helpful. 0 people voted no

Colin M.

Verified Buyer

I recommend this product

Product Standouts Great Quality, Value for Money, Ease of use

Rated 5 out of 5 stars

8 months ago

Go 2 case - NZXT

Easy case to build in, great quality.

Read MoreRead more about this review

Was this helpful?

Yes, this review from Colin M. was helpful. 3 people voted yesNo, this review from Colin M. was not helpful. 1 person voted no

Rated 4 out of 5 stars

I’m very happy with it. it was easy to build in very roomy, has great airflow, and looks clean. Great for the price

Rated 5 out of 5 stars

Easy case to build in, great quality.

Frequently Asked Questions

Can I vertically mount my GPU?

The H3 Flow only has 4 PCIe slot brackets, so vertical GPU mounting is not supported.

Are they compatible with Micro-ATX back-connect motherboards?

Yes, the H3 Flow works with back-connect boards from major brands like MSI and ASUS. Just note that some thicker cables may require tighter bends—using flexible cables and taking your time with cable management can help.

Are there any removable dust filters?

Only the top of the case features a removable mesh panel for easy cleaning. Instead of traditional dust filters, the case utilizes perforated panels that provide excellent airflow while helping keep dust out — reducing the need for extra filters.

What is the difference between the H3 Flow and the H5 Flow?

The H3 Flow is a smaller version of the H5 Flow, designed for micro-ATX motherboards with added support for back-connect motherboards. Here’s a look at their dimensions side-by-side:

H3 Flow: 400 mm x 225 mm x 389 mm | 4.8 kg
H5 Flow: 465 mm x 225 mm x 430 mm | 7.28 kg

What should I know before installing an SSD in this case?

There’s an SSD mounting point on the back of the motherboard tray. If you’re planning to use it, it’s best to install the SSD before mounting your motherboard. That way, you’ll have easier access and smoother cable management.

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