NZXT H2 Flow (2026) mini-ITX Case - All White
- 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, providing a cleaner look and superior internal airflow.
- PCIE 5.0 RISER CABLE - A premium riser cable is included, enabling vertical GPU mounting with reliable, lightning-fast bandwidth.
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Specs
Reviews (3)
Learn more about the NZXT CI-H21FW-01
| Brand | NZXT |
|---|---|
| Model | CI-H21FW-01 |
| Part Number | CI-H21FW-01 |
| Type | Mini-ITX |
|---|---|
| Color | White |
| Case Material | Steel / Tempered Glass |
| Motherboard Compatibility | Mini ITX |
| Side Panel | Front: Steel (mesh) Right Side: Steel (solid and mesh) Left Side: Tempered glass and mesh panel |
| Internal 2.5" Drive Bays | 2 |
|---|
| Front Ports | USB 3.2 Type-A: 2 USB 3.2 Gen2x2 Type-C: 1 Headset Jack: 1 |
|---|
| Fan Options | Total Fan Mounts: 4 x 120 mm / 2 x 140 mm Front: 2 x 120 mm / 2 x 140 mm Top: 2 x 120 mm |
|---|---|
| Radiator Options | Front - Up to 280mm |
| Max GPU Length | 331 mm |
|---|---|
| Max CPU Cooler Height | 75 mm |
| Max PSU Length | 130 mm |
| Dimensions | 434 x 181 x 263 mm |
| First Listed on Newegg | June 01, 2026 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 2 years
- Limited Warranty period (labor): 2 years
- Read full details
Return Policies
- Return for refund until: January 31, 2026
- Return for replacement until: January 31, 2026
- This item is covered by Newegg.ca's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-228-9395
- Support Email: service@nzxt.com
- Support Website
- View other products from NZXT
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The NZXT H2 Flow (2026) is a compact white mini-ITX PC case for performance-focused small-form-factor builders, supporting graphics cards up to 331 mm, front radiators up to 280 mm, and vertical GPU mounting with its included PCIe 5.0 riser cable.
Recommended For
- Users building a compact desktop or living-room gaming PC who want a vertical Mini-ITX case that saves desk or shelf space while still accommodating a high-end graphics card and up to a 280 mm front radiator.
- SFF builders who want a relatively approachable Mini-ITX case with removable tool-less panels, integrated cable-routing features, and more working room than ultra-compact sandwich-style cases.
- Users planning a high-performance gaming or workstation-style Mini-ITX build who prefer strong airflow and are comfortable using an AIO cooler instead of a conventional full-height tower air cooler.
- Builders who want to display selected components through a tempered-glass side panel without giving up the intake area and ventilation benefits of a mesh-focused case design.
- Users who expect to install a modern vertical GPU and want a case that includes a PCIe 5.0 riser cable rather than requiring a separate riser purchase.
Real-World Use Scenarios
- A builder creating a compact high-end gaming PC can use the H2 Flow with a modern full-length graphics card and high-performance Mini-ITX components; review testing shows that a properly configured system can maintain expected gaming performance without requiring a full-size case, although GPU length and thickness should be checked before purchase.
- Someone building their first small-form-factor PC can use the H2 Flow as a more approachable alternative to tighter ITX cases; removable panels, cable-routing points, and the included riser cable make component installation and cable management relatively straightforward, though the layout remains less flexible than a larger case.
- A user running a high-wattage processor for gaming, rendering, or other sustained workloads can pair the H2 Flow with a front-mounted 280 mm liquid cooler; independent testing shows that temperatures can remain controlled under load, but higher fan speeds make the airflow-focused case more noticeable in a quiet room.
- A user wanting a compact desktop or living-room gaming PC can place the vertically oriented H2 Flow in a smaller footprint while still displaying the components through its glass-and-mesh side panel; the open airflow design favors temperature control over silence, so placement away from shared quiet areas is preferable.
- A builder who expects to upgrade or clean the PC regularly can use the H2 Flow's tool-less panels and internal routing features to reach components without extensive disassembly; routine maintenance is convenient, but future upgrades still need to stay within the case's GPU, cooler, power-supply, and motherboard limits.
Reference Q&A
Q: Is the NZXT H2 Flow better than the NZXT H1 for a new Mini-ITX build?
A: Choose the H2 Flow when you want more component flexibility, stronger airflow, and support for a front-mounted radiator up to 280 mm. Its 20.7 L layout supports GPUs up to 331 mm and includes a PCIe 5.0 riser, but you must purchase the power supply and CPU cooler separately. Choose the H1 when a compact, simpler build is more important because it includes a 650 W SFX-L power supply, a 140 mm liquid cooler, and a riser cable.
Q: Should I buy the NZXT H2 Flow or Cooler Master NR200P V3 for a high-performance Mini-ITX PC?
A: Choose the H2 Flow if you prefer a front-mounted 240/280 mm liquid-cooling layout, integrated cable-routing features, two included top fans, and a hybrid glass-and-mesh side panel. Choose the NR200P V3 if graphics-card clearance and a slightly smaller chassis are higher priorities: it supports graphics cards up to 361.5 mm including the power connector and has an 18.62 L volume. Both cases support Mini-ITX systems and include PCIe 5.0 riser cables.
Q: Is the NZXT H2 Flow better than the Fractal Design Terra for gaming performance?
A: The H2 Flow is the better choice for performance-focused gaming builds that use a larger GPU, a taller CPU cooler, or a 240/280 mm front radiator. The Terra is the better choice when portability and desk space are priorities: it is a 10.4 L case weighing about 3.1 kg, compared with the H2 Flow’s 20.7 L volume and approximately 4.55 kg weight. The Terra also limits CPU cooler height to 48–77 mm depending on its adjustable internal layout, while the H2 Flow supports CPU coolers up to 75 mm.
Q: Should I choose the NZXT H2 Flow or NZXT H3 Flow for a compact gaming PC?
A: Choose the H2 Flow when you specifically want a Mini-ITX build with a smaller 20.7 L footprint, vertical GPU mounting, and a PCIe 5.0 riser included. Choose the H3 Flow when you want a more expandable chassis that supports both Mini-ITX and Micro-ATX motherboards, taller CPU coolers up to 170 mm, standard expansion slots, and larger storage options. The H3 Flow is physically larger, so the H2 Flow is more suitable when compact dimensions are the main requirement.
Q: Is the NZXT H2 Flow suitable for a quiet PC, or is it mainly designed for airflow?
A: The H2 Flow is better suited to airflow-focused builds than silence-focused builds. Its mesh front, top, and side sections promote ventilation, and professional testing found that temperatures remained controlled under CPU and gaming workloads. The trade-off is that the open mesh design can produce more audible fan noise under load, especially when fan speeds increase. Choose it for strong cooling potential; choose a more acoustically enclosed case if low noise is the primary goal.
Q: Will a full-size graphics card fit in the NZXT H2 Flow?
A: The case supports graphics cards up to 331 mm long. Check the card’s total length, thickness, and power-connector clearance before buying, because length alone does not guarantee compatibility in a compact mini-ITX build. The included PCIe 5.0 riser cable also supports vertical GPU mounting.
Q: What CPU cooler and radiator sizes are supported?
A: The NZXT H2 Flow supports CPU coolers up to 75 mm tall and front radiators up to 280 mm. This makes it best suited to low-profile air coolers or compact liquid-cooling setups; large tower air coolers are not compatible.
Q: Is this case suitable for a powerful gaming PC in a small footprint?
A: It is suitable for a compact gaming system built around a Mini-ITX motherboard and a graphics card up to 331 mm long. Its 20.7-liter enclosure, all-side mesh ventilation, two included 120 mm exhaust fans, and support for up to a 280 mm front radiator favor high-performance small-form-factor builds. The trade-off is tighter component clearance and less flexibility than a larger case.
Q: Is the NZXT H2 Flow easy to build in and maintain?
A: The tool-less access panels, integrated cable-routing points, and included Velcro straps are designed to simplify assembly, upgrades, and cleaning. However, the Mini-ITX layout still requires careful planning because it supports only Mini-ITX motherboards and limits CPU-cooler and PSU size.
Q: What power supply, storage, and motherboard limitations should I check?
A: The case accepts only Mini-ITX motherboards, supports power supplies up to 130 mm long, and provides two internal 2.5-inch drive bays. Buyers should confirm all three requirements before purchase, especially the PSU length and storage format, because standard ATX motherboards and longer power supplies may not fit.
Q: Will the NZXT H2 Flow fit a large modern graphics card?
A: It supports graphics cards up to 331 mm long, so many high-end cards can fit, but models exceeding roughly 330 mm in length or 65 mm in thickness may require modifications or may not fit. Confirm the exact GPU dimensions before buying.
Q: Can the NZXT H2 Flow use a 280 mm radiator?
A: Yes. The case supports a front-mounted radiator up to 280 mm. However, thick radiator-and-fan combinations can make motherboard access and cable management tighter, so check the radiator, fan, RAM, and cable dimensions together.
Q: Is the NZXT H2 Flow easy to build in for a Mini-ITX case?
A: It is relatively build-friendly for a 20.7 L Mini-ITX case, with tool-less panels, integrated cable-routing points, and included Velcro straps. Community builds describe the layout as forgiving, but installing a large radiator or oversized GPU can reduce the available working space.
Q: Who is the NZXT H2 Flow best suited for?
A: It is best suited for users building a compact Mini-ITX gaming or workstation PC who want strong airflow, support for a front 280 mm radiator, and room for a relatively large GPU. It is less suitable for people using oversized graphics cards, ATX or Micro-ATX motherboards, or very tall CPU air coolers above 75 mm.