Overview

The NZXT H3 Flow, model CC-H31FB-01, is a Micro-ATX mid-tower case built around a fine mesh front panel and a compact footprint. It is sold in Japan as CS9296 through the official distribution channel and carries a two-year warranty. The design goal is clear: keep the chassis small enough for a modest desk or floor space while still accepting serious hardware.
That ambition shows up in the clearance figures. The case takes graphics cards up to 377mm long, CPU coolers up to 170mm tall, and power supplies up to 185mm deep. A 280mm radiator fits in the front and a 240mm unit fits up top, so an all-in-one liquid cooler is a realistic option rather than an afterthought. Up to seven fans can be mounted in total.
The mesh front and a ventilated PSU shroud are meant to keep dust in check while maintaining airflow. NZXT also supports back-connect motherboards, which lets builders route cables behind the tray for a cleaner interior. In the Micro-ATX segment this lands as a mid-range, value-focused enclosure for people who want cooling headroom and GPU support without stepping up to a full tower.

Compatibility Guide

The supported form factor is Micro-ATX, and the chassis is a mid-tower. ATX motherboards will not fit, so the board choice has to be settled before anything else. Plan the build around a Micro-ATX board from the start.
Graphics clearance tops out at 377mm, which leaves room for long high-end cards. Keep in mind that adding a front radiator or front fans can eat into that GPU space, so check the combined dimensions if you plan to run both. CPU cooler height is capped at 170mm, which opens the door to large air coolers, though a top-mounted 240mm radiator makes memory height and cooler clearance worth double-checking.
Power supplies can be up to 185mm deep, and the ventilated shroud is designed with PSU airflow in mind. For cooling, the front accepts a 280mm radiator and the top a 240mm radiator, with up to seven fans overall. Back-connect motherboard support is part of the feature set, so confirm that your board offers rear-side connectors if clean cable routing is the goal.

Product Info

The H3 Flow launched on May 30, 2025, under model number CC-H31FB-01, with CS9296 as the Japanese distribution code.Check the retailer's page for the latest price. What makes it competitive at that price is the combination of a mesh front, seven-fan capacity, 280mm and 240mm radiator support, and 377mm GPU clearance in a compact chassis.

Best Use Cases

  • Builders who want a high-performance GPU in a small footprint: the 377mm GPU clearance and mesh front suit heat-heavy gaming builds, but anyone committed to an ATX motherboard should look elsewhere.
  • Creators planning a liquid-cooled, quiet-ish system: front 280mm and top 240mm radiator support keeps cooling options open, while people who need a full tower for expansion will find it cramped.
  • Users with a back-connect motherboard who want hidden cabling: rear connector support makes for a tidy interior, though those who want maximum drive bays should consider a larger case.

Things to Consider

The Micro-ATX-only design rules out reusing an ATX motherboard, so check your existing board before buying. Mounting a front radiator can effectively shorten the usable GPU length, which matters if you pair a long card with liquid cooling. Running a top 240mm radiator alongside a tall air cooler also calls for careful clearance checks, including memory height.
Because the case prioritizes airflow and expansion, buyers whose top priority is near-silent operation or a large number of 3.5-inch drives may find it either overkill or insufficient. At this price, it makes the most sense for someone whose goal is clearly to cool a strong GPU inside a Micro-ATX build.

FAQ

Q: Can I install an ATX motherboard?
A: The supported form factor is Micro-ATX. ATX boards are not part of the design, so choose a Micro-ATX motherboard.
Q: Can I use a long graphics card together with a liquid cooler?
A: GPUs up to 377mm are supported, but a front radiator can reduce the available GPU space. Check the card length and radiator thickness together before committing.
Q: How many fans can the case hold?
A: Up to seven fans. With front 280mm and top 240mm radiator support, the chassis gives you room to build either an air or liquid cooling setup.

Product Disclosure (Amazon)

  • Manufacturer: NZXT
  • Model: CC-H31FB-01
  • ASIN: B0DQPMJ6MJ
  • Note: This article covers a manufacturer-made product based on Amazon listing details.