NZXT H2 Flow - Mini-ITX 20.7L Airflow PC Case - White | Compact 20.7L Mini-ITX case with 2 included 120mm top fans and PCIe 5.0 riser. Small-form-factor airflow done right.
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Availability:
Only 2 left in stock, order soon!
Arrives
Friday, Sep 25
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Color: White
Features
- SHOWCASE YOUR LIQUID COOLING Hybrid glass-and-mesh side panel reveals your build while supporting up to a 280 mm radiator for efficient, sustained cooling.
- COMPACT SIZE. SERIOUS PERFORMANCE A 20.7 L design fits most GPUs up to 331 mm, bringing high-end power to a footprint smaller than a sheet of paper.
- AIRFLOW, FROM EVERY SIDE Ultra-fine mesh panels maximize fresh air intake while filtering dust to keep components cooler, cleaner, and performing consistently.
- DESIGNED FOR EFFORTLESS BUILDS Tool-less panels, integrated cable routing Velcro straps simplify installation while maintaining a clean, organized interior.
- PERFORMANCE, PRE-INSTALLED Premium PCIe 5.0 riser cable and dual F120Q CV fans enable full-bandwidth vertical GPU mounting and immediate exhaust cooling.
Description
The H2 Flow (CI-H21FW-01) 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.
Brand: NZXT
Motherboard Compatability: Mini ITX
Case Type: Mini-Tower
Recommended Uses For Product: Gaming
Color: White
Cooling Method: Air
Model Name: H2 Flow White
Item Weight: 4.55 kg
Product Dimensions: 10.54"D x 17.07"W x 7.12"H
Number of Items: 1
Supported Motherboard: Mini ITX
Case Type: Mini-Tower
Cooling Method: Air
Color: White
Antenna Location: Gaming
Item Weight: 4.55 kg
Item Dimensions D x W x H: 10.54"D x 17.07"W x 7.12"H
Brand: NZXT
Model Name: H2 Flow White
Manufacturer: NZXT
UPC: 810074848398
Model Number: CI-H21FW-01
Mfr Part Number: CI-H21FW-01
Warranty Description: 2 Year Manufacturer
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Sep 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
Excellent case. I was unable to make this silent I think because of the small air volume and SFF requirement, but if a slight humming doesn't bother you then this case is super easy to build in and look excellent. (I'm just a bit too autistic)
Reviewed in the United States on June 7, 2026 by HiveTyrant36
Color: Black
Well designed case. Good quality parts. Looks good. Small footprint. A+
Reviewed in the United States on June 5, 2026 by CAN KUDRET SANDALCI
Color: Black
ALMOST a perfect case!!!! The build quality is excellent. The airflow is fantastic. What is it missing? it should be much taller, to fit a longer GPU. Which means fitting a 5090. But then it also needs to be a bit wider to fit a 5090. So with those two fixes? that would make the perfect case. And since its taller, you could probably fit a 360mm radiator in the front since its taller. Which would be a huge win. Its ALMOST PERFECT. Its already assembled you just throw parts in and you are good to go. No issues with the pci-e gen5 cable! Legit works with my 9070xt no issues!!!! Its a sick case. VERY QUIET. So far been an absolute breeze, and yeah that's the joke.
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Reviewed in the United States on May 17, 2026 by namco
Color: Black
This case is what I was looking for. It's not too different from the SSUPD cause but, IMO the build quality is better. I appreciate I do not need right angle adapters for the GPU (or to buy taller feet), PCIE Gen 5 riser and lastly, the split glass looks dope without compromising on temps. Downsides would includ only being able to use sfx/sfxl PSU, only itx boards but for me, it's a non issue as space is a premium.
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Reviewed in the United States on March 2, 2026 by CDubbsW0rld
Color: Black
**Quick notes / TLDR** - SFX psu required, good looking case, great accessibility. Arctic 240/280mm radiators will fit with fans mounted on the inside and rad mounted outside of removable bracket. Your average dp cable and hdmi cables work fine, don’t need angled. Price vs performance is good but debatable. 8/10. First off I want to say I am a fan of nzxt cases. I ordered this case with a bias that it would be of good all around quality as I’ve owned and appreciated almost every variant of their flow series. That being said here is my pros and cons. Cons: - too much space in all the wrong places. I moved my itx build over from a TT TR100, and while I appreciate the smaller footprint, the open spaces of this case near the psu(bottom of the case) and near the top of the case(between the motherboard and case fan housing) seem counterintuitive. There is little to no cables or cable management that need to be done in these areas and leads to unnecessary cable run lengths and wasted space when looking at it from a sff case perspective. - Cpu thermals are subpar* When comparing this to cheaper mitx cases such as the TT TR100 and Tower 250 I’ve actually seen a RISE in temperatures on the cpu side of cooling. About 5~7c degrees idle and 10~15c under load or gaming, while using the same kraken plus 280 AIO cooler with reapplied thermal grizzly kryonaut across all 3 builds. - Small but notable con; the pcie riser has a bit too much slack and is going to be pressed against the gpu somewhat firmly. Pros: - It looks good, the glass panel is a nice-to-have and is well implemented. The glass meets the mesh panel right above where you would begin to see your psu cabling so the build will look clean with minimal ocd level cable management. - Accessibility, as with most NZXT cases, building in this case was very easy. Every panel is removable and you have access to every cable, plug, and header you need to reach. Nothing on the case needed to be modified, shimmed, or shaved, it just fit. - Gpu temps are on average better vs. cases with no immediate exhaust fans. *AIO in pictures is kraken 240 not 280 as I wanted to ensure the cooler was not failing after checking temps.
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Reviewed in the United States on February 28, 2026 by Layne Phariss
Color: Black
One of the top itx makes out there glad I bought mine fast. Nzxt should note that they defentntly Could trim down the lower portion of the center where the psu sits the side wall could be trim down (it has twon lil bimps get rid of that,and you could fit a full atx psu. Not to mention a 360mm raid as well top portion could make room would love to see an upgrade version. Send me one lol. Great job NZXT
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Reviewed in the United States on March 8, 2026 by EM
Color: Black
Exactly what I was looking for. I wanted a smaller build without compromising what I can put inside of it. I put a 7800x3d, 280 kraken elite AIO, cooler master 850 sfx Psu, Asrock b650i, 32gb ram and a Xfx 9070xt swift in this.
Reviewed in the United States on July 21, 2026 by Robert
Color: Black
The NZXT H2 Flow is clearly designed with modern liquid cooling in mind, and it feels almost purpose-built to showcase a 280mm AIO like the Kraken Elite. The hybrid glass-and-mesh side panel does a great job of putting your components on display while still maintaining strong airflow. From a design standpoint, it strikes a nice balance between aesthetics and thermals. That said, the case feels larger than expected for a Mini-ITX enclosure. At 20.7 liters, it leans more toward compact mid-tower territory than truly small form factor. Compared to its predecessor, the H1, this case is noticeably bigger and less space-efficient. Despite the increased size, the extra room does make building significantly easier. Cable management is straightforward thanks to the integrated Velcro straps and thoughtful layout. The tool-less panels are a welcome addition and make accessing components quick and painless. There’s ample clearance for larger GPUs, and fitting high-end hardware is not an issue. However, because of that extra space, it feels like NZXT could have pushed the compactness further without sacrificing usability. The case almost feels like it was scaled up primarily to accommodate larger radiators rather than optimizing footprint. Thermal performance is solid, especially when paired with a high-quality AIO. With the Kraken Elite 280mm installed, idle temperatures for both CPU and GPU sit comfortably around 41 degrees. Airflow is excellent thanks to the mesh panels on multiple sides, which help maintain consistent cooling. The two pre-installed 120mm top fans contribute to efficient exhaust right out of the box. Dust filtration also seems well thought out, helping keep internal components cleaner over time. Overall cooling performance aligns well with the case’s airflow-focused design. In terms of real-world use, this build performs exceptionally well for 4K TV couch gaming. Paired with a powerful GPU and controlled via an Xbox Elite Series 2 controller, the experience is smooth and reliable. The system feels responsive and stable even under demanding gaming conditions. The included PCIe 5.0 riser cable is a nice touch, enabling vertical GPU mounting without bandwidth concerns. This adds to both the visual appeal and functionality of the build. It’s clear that the case is designed with high-performance gaming setups in mind. The component selection in this build complements the case well and takes full advantage of its capabilities. High-speed DDR5 memory and a strong power supply ensure stability and future-proofing. The motherboard and CPU combination deliver solid performance without excessive heat output. Storage is fast and reliable, contributing to quick load times and smooth operation. Altogether, the system feels balanced and purpose-driven. While the case may not be the smallest Mini-ITX option, it delivers where it matters in performance, ease of build, and cooling efficiency. My Build: Crucial P510 Corsair SF1000 Asus Rog Strix B850i NZXT Kraken Elite 280mm MSI Shadow 5070TI Biwin Black Opal 48GB DDR5 AMD Ryzen 5 7600X
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Reviewed in the United States on April 1, 2026 by Customer Review