PC case NZXT H2 Flow Small Form Factor (SFF) — Mini-ITX, 2x 2.5 inch bays, Tempered glass, Black, 181×263×435 mm

The NZXT H2 Flow Small Form Factor (SFF) is a compact Mini-ITX PC case designed to combine efficient cooling, straightforward assembly and a tempered-glass display in a space-saving vertical chassis. With dimensions of 181×263×435 mm and a total volume of approximately 20.7 L, the case supports two 2.5" drives, Mini-ITX motherboards and graphics cards up to 331 mm. Construction uses steel panels and a hybrid tempered-glass-and-mesh side, while ultra-fine mesh on multiple sides improves airflow and dust filtration. The case ships with two F120Q CV 120 mm top fans and a premium PCIe 5.0 riser cable to enable vertical GPU mounting and high-bandwidth connectivity.

Advantages

The H2 Flow delivers a balance of compact footprint and component compatibility: support for up to a 280 mm radiator enables liquid cooling in a small chassis, and the 331 mm GPU clearance accommodates modern graphics cards. Tool-less access panels and integrated cable-routing points with Velcro straps simplify assembly and maintenance. Ultra-fine mesh panels on multiple sides maximize intake while filtering dust, and the hybrid glass-and-mesh side panel provides component visibility without sacrificing thermal performance. The included PCIe 5.0 riser cable and pre-installed top fans reduce the number of parts required for a functioning, vertically oriented system.

Suitable for

• Compact gaming PCs where high-performance GPUs and liquid cooling are required
• Home or office workstations with limited desk space
• Mini-ITX builds emphasizing component display through tempered glass
• Systems that benefit from vertical GPU mounting for improved layout or airflow

Key specifications

• Form factor: Small Form Factor (SFF), Mini-ITX support
• Drive bays: 2 × 2.5"
• Materials: Tempered glass side, steel chassis
• Dimensions (W×D×H): 181 × 263 × 435 mm
• Weight: 4.55 kg
• GPU clearance: up to 331 mm
• Radiator support: up to 280 mm (top)
• Included fans: 2 × 120 mm F120Q CV (3-pin DC) top exhaust
• Airflow features: ultra-fine mesh panels on multiple sides
• Expansion: supports vertical GPU mounting with included PCIe 5.0 riser cable

How to use

Install a Mini-ITX motherboard and route power and data cables using the built-in cable-routing points and supplied Velcro straps for a tidy interior. Mount up to two 2.5" drives in the designated bays and install the GPU using the included PCIe 5.0 riser cable if vertical mounting is desired. Fit cooling solutions up to a 280 mm radiator in the top position or use the two pre-installed 120 mm fans as exhaust. Panels remove without tools to access internal components for upgrades, cleaning or cable adjustments.

Recommendations

For optimal thermal performance, use a balanced intake-exhaust configuration and maintain clean mesh filters. When installing a radiator, verify clearance for the chosen radiator thickness and fan configuration. Use the integrated routing points and Velcro straps to keep cables away from airflow paths, and ensure the GPU length and cooling solution fit within the specified clearances before final assembly.