Compact Mini Tower gaming case designed for users who do not want to compromise on cooling when building a high-performance system based on micro-ATX. The design is based on the concept of maximum airflow, implemented through perforated panels with ultra-fine mesh at the front and top, which effectively filter dust. The chassis offers extensive options for cooling organization: up to seven fan mounts and support for liquid cooling radiators up to 280 mm at the front and 240 mm at the top.

One 120 mm fan is pre-installed on the rear panel for hot air exhaust. Despite its compact size, the interior space allows for full-size graphics cards up to 377 mm long (without front fans) and CPU coolers up to 170 mm high. A key feature, oriented towards modern trends, is the support for motherboards with back-connect connectors. This, combined with well-thought-out cable management channels, allows for an exceptionally tidy build appearance. On the top panel of the NZXT H3 Flow case are peripheral connectors, among which stands out a high-speed USB-C 3.2 Gen 2x2 port.

All specifications

Specifications H3 Flow Black

Colour

Features	gaming
Form factor	Mini Tower
Mount	vertical
Motherboard support	micro-ATX
Board placement	vertical
Reverse layout motherboard support
PSU form factor	ATX (regular)


Computer case
Dimensions (HxWxD)	400x225x389 mm
PSU max lenght	185 mm
Graphics card max lenght	352 mm
Fan max height	170 mm
Weight	4.8 kg
Material	steel
Side panel	removable


Storage
PSU
PSU mount	bottom
3.5" bays	1
internal 2.5" compartments	3 / 2 вместо 3,5" /
Expansion slots	4


Cooling
Installed fans	1 шт 120mm
Fans (back)	1x120mm
Fans (front)	2x140mm / 2x120mm /
Fans (top)	2x140mm / 2x120mm /
Fans (bottom)	2x120mm
Fan mounts total	7
Dust filter	top and bottom
Liquid cooling system support

Liquid cooling system
Liquid cooling (rear)	120 mm
Liquid cooling (front)	280 mm
Liquid cooling (top)	240mm
Liquid cooling mounts	3


Connectors and functions
Placement	on top of the case
USB-A 5Gbps	1 pcs
USB-C 20Gbps	1 pcs
Audio (microphone/headphones)


More features
Front panel	lattice
Side panel window	tempered glass
More features	hidden wiring CPU cooling mount window
Official Website	nzxt.com
Added to E-Catalog	July 2025
P/N	CC-H31FB-01

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog NZXT 2026 - new arrivals, bestsellers, and the most relevant models NZXT.

How to choose a PC case?Basic factors for choosing a stylish computer case with good functionality and efficiency

Shine Bright: Everything You Ever Wanted to Know About PC RGB LightingWe understand how the backlight appeared in the PC, how it is useful, and what synchronization systems are on the market

Buy NZXT H3 Flow black

All prices 6 →

When you make a purchase through links on our site, we may receive a affiliate commission.


	NZXT H3 Flow Micro-ATX PC Case Optimized Airflow Includes 1 x 120mm Rear Fan Supports Full-Sized GPUs Fits 280mm Front, 240m SPACE-SAVING SIZE A space-efficient micro-ATX chassis that accommodates high-performance components without compromise. HIGH-... moreAIRFLOW DESIGN Ultra-fine steel mesh on the panels and PSU shroud maximizes airflow while effectively filtering dust. EXTENSIVE COOLING SUPPORT Supports up to a 280 mm radiator at the front, a 240 mm radiator at the top, and up to seven fans for powerful cooling performance. FULL-SIZE GRAPHICS CARDS Fits GPUs up to 377 mm (without front fans), 352 mm (with front fans), and Newegg.com Delivery: in USA Report		$59.99 Buy in shop

	NZXT - H3 Flow Micro-ATX High-Airflow PC Case - Black CC-H31FB-01 The H3 Flow is a space-efficient micro-ATX PC case delivering exceptional airflow and versatile component compatibility. Desi... moregned for optimal cooling, the mesh panels and ventilated PSU shroud keep high-performance components running smoothly. BestBuy.com Delivery: in USA Report		$59.99 Buy in shop

	NZXT CC-H31FB-01 Black tinted tempered glass Micro ATX Cases Case (Computer Cases - ATX Form) tinted tempered glass Micro ATX Cases 1 Internal 3.5' Drive Bays Newegg.com Delivery: in USA Report		$59.99 Buy in shop

	NZXT H3 Flow Micro-ATX PC Case Optimized Airflow Includes 1 x 120mm Rear Fan Supports Full-Sized GPUs Fits 280mm Front, 240m SPACE-SAVING SIZE A space-efficient micro-ATX chassis that accommodates high-performance components without compromise. HIGH-... moreAIRFLOW DESIGN Ultra-fine steel mesh on the panels and PSU shroud maximizes airflow while effectively filtering dust. EXTENSIVE COOLING SUPPORT Supports up to a 280 mm radiator at the front, a 240 mm radiator at the top, and up to seven fans for powerful cooling performance. FULL-SIZE GRAPHICS CARDS Fits GPUs up to 377 mm (without front fans), 352 mm (with front fans), and Newegg.com Delivery: in USA Report		$61.99 Buy in shop

	NZXT - H3 Flow Micro-ATX High-Airflow PC Case - Black CC-H31FB-01 The H3 Flow is a space-efficient micro-ATX PC case delivering exceptional airflow and versatile component compatibility. Desi... moregned for optimal cooling, the mesh panels and ventilated PSU shroud keep high-performance components running smoothly. BestBuy.com Delivery: in USA Report		$73.52 Buy in shop

	NZXT - H3 Flow Micro-ATX High-Airflow PC Case - Black CC-H31FB-01 The H3 Flow is a space-efficient micro-ATX PC case delivering exceptional airflow and versatile component compatibility. Desi... moregned for optimal cooling, the mesh panels and ventilated PSU shroud keep high-performance components running smoothly. BestBuy.com Delivery: in USA Report		$123.89 Buy in shop