PC Case NZXT H9 Flow Midi Tower White — ATX/EATX/Micro ATX/Mini-ITX, 3x140mm front, 1x120mm rear, 2x3.5 inch & 6x2.5 inch bays, tempered glass

The NZXT H9 Flow is a white mid-tower PC case designed for high-performance builds that need strong cooling and a clear view of internal components. Its dual-chamber layout separates heat-generating parts from power and storage areas, while wraparound tempered glass panels provide an uninterrupted panoramic view of the build.

Advantages

The case offers optimized airflow through angled front-right fans and perforated steel/mesh panels that balance high air intake with dust filtration. It accommodates large radiators and long graphics cards, supports up to ten fans, and includes pre-installed fans for immediate cooling. Cable routing is simplified by extra-wide channels, Velcro straps, and multiple tie-down points. Compatibility with back-connect motherboards enables a clean, cable-free rear appearance.

Suitable for

• High-performance gaming PCs
• Workstations requiring strong cooling and component visibility
• Custom liquid-cooled systems with large radiators
• Systems using long, high-end graphics cards

Key specifications

• Form factor: Midi tower
• Supported motherboard sizes: ATX, EATX, Micro ATX, Mini-ITX
• Pre-installed fans: three 140 mm (front-right) and one 120 mm (rear)
• Maximum fan support: up to nine 140 mm fans plus one 120 mm rear fan (ten-fan capacity)
• Radiator support: up to 420 mm on top and front-right panels
• Maximum GPU length: up to 435 mm
• Drive bays: supports 2.5" and 3.5" drives; two 3.5" bays and six 2.5" bays
• Materials: SGCC steel, ultra-fine mesh panels, tempered glass
• Front I/O: two USB 3.2 Gen 1 Type-A ports
• Color: white
• Dimensions (W×D×H): 315 × 481 × 506 mm
• Weight: 12.46 kg

How to use

Install the motherboard compatible with ATX, EATX, Micro ATX, or Mini-ITX layouts into the main chamber and mount storage drives in the designated 2.5" or 3.5" brackets. Fit GPUs up to 435 mm in length and position radiators (up to 420 mm) on the top or front-right locations if using liquid cooling. Route cables through the extra-wide channels and secure them with the integrated Velcro straps and tie-down points to maintain airflow and a tidy interior. The pre-installed fans provide baseline airflow; add or reposition fans as required for heavier cooling loads.

Recommendations

For optimal cooling performance, combine the pre-installed front-right and rear fans with additional top or bottom 140 mm fans and install dust filters on intake locations. When using large radiators, check clearance for long graphics cards and route power cables through the back-connect compatible paths if using supported motherboards to achieve a cleaner rear layout.