Whats the cfm of this fan?

The output, converted from 9.4 m3/h is just 5.5 cfm, very low indeed.

What is the mtbf. How many hours of life can I expect from one of these?

Not sure about the Mtbf, but i purchased 2 of this in Jan 2020, and they have been running 24/7 till now with no problems. Installed them in my 2 poe+ switches

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🌀 Stay cool, stay ahead — silent power in a compact package!

ROBUST AIRFLOW DELIVERY - Delivers up to 9.4 CFM airflow to keep your critical hardware cool and efficient
VERSATILE COMPATIBILITY - Omnijoin adapter set ensures seamless integration with proprietary fan strips
COMPLETE INSTALLATION KIT - Includes anti-vibration mounts, screws, and extension cables for hassle-free setup
WHISPER QUIET PERFORMANCE - Advanced acoustic optimization keeps noise below 15 dB—work without distractions
PRECISION COOLING IN COMPACT FORM - 40x20mm size perfect for tight 1U spaces and network devices

The Noctua NF-A4x20 FLX is a premium 40x20mm computer case fan designed for 1U applications and compact devices like routers and NAS. It features a high-speed range up to 5000 RPM with advanced flow acceleration channels for superior cooling, while maintaining ultra-quiet operation at 14.9 dB. The package includes anti-vibration mounts, extension cables, and an Omnijoin adapter for easy, versatile installation.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Manufacturer	Noctua
Part number	NF-A4x20 FLX
Item Weight	170 g
Product Dimensions	4 x 4 x 2 cm; 170 g
Item model number	NF-A4x20 FLX
Material	Plastic
Voltage	12 Volts
Item Package Quantity	1
Air Flow Capacity	9.4 CMPH
Noise Level	14.9 dB
Included components	1
Batteries included?	No
Batteries Required?	No

Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)

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