NZXT H3 Flow M-ATX Mini Tower Case 2025 Editi

The NZXT H3 Flow (CC-H31FB-01) is a Micro-ATX mini tower case engineered for builders who demand strong thermal performance without sacrificing desk space. Constructed from SGCC steel with a tinted tempered glass side panel, the chassis strikes a balance between durability and aesthetics while keeping weight manageable in a compact footprint. Airflow sits at the heart of the H3 Flow’s design. Ultra-fine steel mesh panels on the front, top, and sides allow a high volume of fresh air to enter the case while acting as a first line of defence against dust accumulation. A ventilated PSU shroud further aids bottom-intake efficiency, ensuring the power supply zone does not create a thermal bottleneck for the rest of the system. Out of the box, a single F120Q (CV) 3-pin DC fan ships pre-installed at the rear to provide immediate exhaust airflow from day one. Cooling flexibility is a genuine strength. The front panel accommodates radiators up to 280 mm, while the top supports up to a 240 mm radiator — giving liquid-cooling enthusiasts room to run a capable AIO without needing a larger chassis. Altogether, the case supports up to seven fans, making aggressive air-cooling configurations equally practical. CPU cooler clearance reaches 170 mm, covering most high-end tower coolers on the market. Despite its compact dimensions, the H3 Flow does not compromise on GPU support. Graphics cards up to 377 mm long can be installed when no front fans are present; with front fans fitted the limit is 352 mm, and with a front radiator and fans installed the maximum drops to 317 mm — still sufficient for most current enthusiast-class GPUs. The PSU bay accepts units up to 185 mm in length. Storage options include one 3.5-inch HDD bay and up to three 2.5-inch SSD positions (1 dedicated + 2 additional), alongside four expansion slots for add-in cards. Front I/O includes a USB 3.2 Type-A port and a USB Type-C port, covering fast data transfer and modern peripheral connectivity. The case is back-connect motherboard compatible, officially supporting boards such as ASUS BTF and MSI Project Zero, enabling a completely cable-free aesthetic on the visible side of the build. Tool-free removable panels on the top, front, and side simplify routine maintenance and upgrades. Integrated cable channels and multiple tie-down points keep cable routing orderly without requiring aftermarket solutions. Verified Specifications: • Form Factor: Micro-ATX / Mini-ITX • Material: SGCC Steel, Tinted Tempered Glass • Colour: Black • Pre-installed Fans: 1× F120Q (CV) rear fan (3-pin DC) • Max Fan Support: 7 • Front Radiator Support: up to 280 mm • Top Radiator Support: up to 240 mm • Max GPU Length: 377 mm (no front fans) / 352 mm (with fans) / 317 mm (with front radiator + fans) • Max CPU Cooler Height: 170 mm • Max PSU Length: 185 mm • Storage: 1× 3.5-inch HDD, up to 3× 2.5-inch SSD • Expansion Slots: 4 • Front I/O: USB 3.2 Type-A, USB Type-C • Warranty: 2 Years