NZXT H3 Flow Micro-ATX Airflow Case Overview

The NZXT H3 Flow is a space-efficient micro-ATX case designed to deliver serious performance in a smaller footprint. Despite its compact size, it comfortably supports full-size components, making it an excellent choice for powerful gaming and productivity builds where desk space matters.

High-Airflow Mesh Construction

Engineered for optimal cooling, the H3 Flow features ultra-fine steel mesh panels on the front and top, paired with a ventilated PSU shroud. This airflow-focused design ensures consistent cooling while also acting as a dust filter to keep internal components clean over time.

Flexible Cooling & Radiator Support

The case supports up to seven fans and offers generous radiator compatibility, including up to a 280mm radiator in the front and a 240mm radiator on top. A pre-installed F120Q (CV) rear fan provides efficient exhaust airflow straight out of the box.

Full-Size GPU Compatibility

Despite its compact form, the H3 Flow supports large graphics cards up to 377mm (without front fans), 352mm (with front fans), or 317mm (with a front radiator installed). This makes it suitable for high-end GPUs without compromising airflow or layout.

Clean & Simple Cable Management

Integrated cable routing channels and up to 31.5mm of cable clearance make it easy to organize cables neatly. Multiple tie-down points help maintain a clean interior, improving airflow and enhancing the overall visual appeal of the build.

Back-Connect Motherboard Ready

The H3 Flow is compatible with rear-connecting motherboards such as ASUS BTF and MSI Project Zero, enabling a cleaner, near cable-free look from the main chamber perfect for minimalist builds.

Tool-Free Accessibility

Removable top, front, and side panels allow for easy upgrades, maintenance, and cleaning without the need for tools. This makes the building and upgrading process faster and more user-friendly.

Front I/O & Everyday Connectivity

The front I/O panel includes one USB 3.2 Type-A port and one USB 3.2 Gen 2x2 Type-C port, offering fast and convenient access for modern peripherals and storage devices.

Durable Build with Minimalist Style

Built from SGCC steel and premium tempered glass, the NZXT H3 Flow maintains a clean, modern aesthetic while delivering long-lasting durability. Its understated design fits seamlessly into both gaming and professional setups.