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Main image of NZXT F Series RGB Core 420mm Black Single-Frame Case Fan, 3 Fans, 98.61 CFM, RF-U42HF-B1

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NZXT F Series RGB Core 420mm Black Single-Frame Case Fan, 3 Fans, 98.61 CFM, RF-U42HF-B1

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Color: Black

Cooling Output: Three 420mm fans deliver 98.61 CFM per fan for case airflow and cooling.
Speed Range: 500 - 2,000 ± 200 RPM per fan supports adjustable cooling performance.
Quiet Operation: Fluid Dynamic Bearing and Zero RPM Mode support quiet, durable operation at 34.5 dBA per fan.
Single-Frame Design: Integrated fan construction simplifies installation and digital control with one connected frame.
RGB Lighting: Eight RGB LEDs per fan illuminate semi-translucent blades for customizable, synchronized lighting.
Control Connection: Use the 8-pin connector for PWM and RGB, connect to an NZXT controller sold separately, or use the included splitter for 5V ARGB motherboard connection.

Overview

Specs

Reviews (1)

F SERIES RGB CORE

Brilliant Cooling in a Unified Frame

NZXT F Series RGB Core single-frame fans combine multiple fans in one design for streamlined installation, cooling, and control.

PWM fans with fluid dynamic bearings ensure effcient performance with minimal noise, while personalizable RGB LEDs illuminate through the blades for a captivating effect.

F SERIES RGB CORE

240MM | 280MM | 360MM | 420MM

SINGLE-FRAME RGB FAN UNIT

Available in Black and White

F240 RGB CORE

F280 RGB CORE

F360 RGB CORE

F420 RGB CORE

HIGH PERFORMANCE. LOW NOISE.

Optimized for cooling, the integrated fans balance airflow and static pressure. Minimal blade-to-edge gap boosts efficiency. Fluid dynamic bearings with Zero RPM Mode* ensure quiet, durable operation.

* Requires an NZXT controller or NZXT motherboard, each sold separately.

SIMPLE INSTALLATION

Single-frame design simplifies installation and digital control. Connect a single cable to an NZXT controller (sold separately) to use CAM software or use the included splitter for 5V ARGB motherboard connection.

RADIANT RGB

Eight RGB LEDs per fan illuminate semi-translucent blades. Personalize and sync lighting with NZXT CAM* for a unified NZXT product aesthetic.

* Requires an NZXT controller or NZXT motherboard, each sold separately

Overview

The NZXT F Series RGB Core 420mm single-frame case fan system combines three fans in a black frame for simplified installation, adjustable cooling performance, quiet operation, and customizable RGB lighting. Part number RF-U42HF-B1.

Key Features

Its integrated three-fan design simplifies installation, while Fluid Dynamic Bearing and Zero RPM Mode support quiet, durable operation. Eight RGB LEDs per fan illuminate semi-translucent blades, and the included splitter supports a 5V ARGB motherboard connection.

Performance

Each fan operates from 500 - 2,000 ± 200 RPM, delivers 98.61 CFM of airflow, and has a noise level of 34.5 dBA. These specifications provide adjustable airflow and static-pressure performance for case cooling.

Design

The black single-frame system uses a 420mm fan size and integrates three fans into one frame. Semi-translucent blades help display the integrated RGB lighting.

Connectivity & Compatibility

The 8-pin power connector supports PWM and RGB. Connect the fan system to an NZXT controller sold separately for digital control, or use the included splitter for connection to a 5V ARGB motherboard.

Reliability & Durability

Fluid Dynamic Bearing supports quiet, durable operation, while Zero RPM Mode supports quieter operation when active.

Software & Tools

NZXT CAM supports digital control and lets you personalize and synchronize the RGB lighting when the fan system is connected to an NZXT controller.

Specifications

Brand: NZXT
Part Number: RF-U42HF-B1
Type: Case Fan
Fan Count: 3 Fans
Fan Size: 420mm
Bearing Type: Fluid Dynamic Bearing
RPM: 500 - 2,000 ± 200 RPM per fan
Airflow: 98.61 CFM per fan
Noise Level: 34.5 dBA per fan
Power Connector: 8-pin for PWM and RGB
LED: RGB
Color: Black

What's in the Box

An included splitter supports connection to a 5V ARGB motherboard.

Model
Brand	NZXT
Part Number	RF-U42HF-B1

Details
Fan Counts	3 Fans
Type	Case Fan
Fan Size	420mm
Bearing Type	Fluid Dynamic Bearing
RPM	500 - 2,000 ± 200 RPM per fan
Air Flow	98.61 CFM per fan
Noise Level	34.5 dBA per fan
Power Connector	8-pin for PWM and RGB
Color	Black
LED	RGB

Additional Information
First Listed on Newegg	May 19, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

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Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.