NZXT H3 Flow (2025) micro-ATX Mid Tower Case - All Black

Key Features:

• Space-Saving Size: A space-efficient micro-ATX chassis that accommodates high-performance components without compromise.
• High-Airflow Design: Ultra-fine steel mesh panels and a ventilated PSU shroud maximize airflow while effectively filtering out dust.
• Extensive Cooling Support: Supports up to a 280 mm radiator in the front, a 240 mm radiator on top, and up to seven fans for powerful, customizable cooling performance.
• Full-Size GPU Support: Fits graphics cards up to 377 mm (without front fans), 352 mm (with front fans), or 317 mm (with front radiator and fans installed).
• Pre-Installed Rear Fan: Includes one F120Q (CV) fan at the rear to provide efficient exhaust airflow straight out of the box. CV = Case Version (3-pin DC)
• Simplified Cable Management: Integrated cable channels and multiple tie-down points make it easy to route and organize cables for a clean, organized build.
• Back-Connect Motherboard Compatible: Ready for rear-connector motherboards like ASUS BTF and MSI Project Zero, enabling a clean, cable-free aesthetic.
• Tool-Free Access: Removable top, front, and side panels allow for easy upgrades and cleaning—no tools required.

Micro-ATX Airflow Case

The H3 Flow micro-ATX case combines a space-efficient design with high-performance capability. Designed to support full-sized components, it features ultra-fine mesh panels and a ventilated PSU shroud to maintain consistent, optimized airflow throughout your build.

Sized Down. Powered Up.

The H3 Flow delivers high-performance airflow in a space-efficient micro-ATX footprint. With fine mesh panels, a ventilated PSU shroud, and support for large components, it keeps powerful parts cool without taking over your desk.

Space-Saving Design

The micro-ATX form factor fits into smaller spaces, maximizing desk space without compromising on performance.

Optimized Airflow

Ultra-fine mesh on the front, top, and sides enhances cooling while filtering dust. The ventilated PSU shroud optimizes intake from bottom-mounted fans.

Full-Size GPU Support

Max length of 377 mm (no front fans), 352 mm (with fans), 317 mm (with fans & radiator).

7-Fan Capacity

Supports up to 140 mm fans (two front, two top) and 120 mm fans (two bottom, one rear).

Radiator Ready

Supports a 280 mm front radiator and a 240 mm top radiator for versatile cooling setups.

Back-Connect Ready

Compatible with ASUS BTF and MSI Project Zero motherboards for a clean, cable-free build.

Tool-Free Access

Easily remove panels for building, upgrading, or cleaning.

Easy Cable Management

Integrated cable channels and tie-down points make routing clean and simple.

Specifications

Dimensions

• Height (with feet) : 400 mm (15.75 in)
• Width : 225 mm (8.86 in)
• Depth : 389 mm (15.31 in)
• Volume : 35.0 L
• Weight : 4.8 kg (10.58 lb)

General

• Enclosure Type : Micro-ATX Case
• Motherboard Compatibility : Micro-ATX, Mini-ITX
• Supports Rear-Connecting Motherboards (BTF, Project Zero) : Yes (Micro-ATX)
• Materials : SGCC steel, clear tempered glass (white), tinted tempered glass (black)

Clearance

• CPU Cooler Height : 170 mm
• GPU Length: Up to 377 mm (without front fans) Up to 352 mm (with front fans) Up to 317 mm (with front radiator and fans)
• PSU Length : Up to 185 mm
• Cable Routing Space : Up to 31.5 mm
• Front Radiator + Fan Thickness : Up to 63 mm
• Top Radiator + Fan Thickness : Up to 70 mm

Front I/O Ports

• USB 3.2 Type-A : 1
• USB 3.2 Gen2x2 Type-C : 1

Expansion Slots

• Standard : 4
• Vertical : 0

Drive Bays

• 2.5" : 1+2
• 3.5" : 1

Fan Support

• Front : 2 x 120 mm / 2 x 140 mm
• Top : 2 x 120 mm / 2 x 140 mm
• Bottom : 2 x 120 mm
• Rear : 1 x 120 mm (1 x F120Q (CV) included)

Radiator Support

• Front : Up to 280 mm
• Top : Up to 240 mm

Fan Specs

• Model : F120Q (CV)
• Speed : 1,350 ± 150 RPM
• Airflow : 60.2 CFM
• Static Pressure : 1.05 mmH2O
• Noise : 24.1 dBA
• Fan Connector : 3-pin