Hardware Spec Index

Zephyra FN-4391 Pro 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4391-PRO · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index820 (Case Fans scale)
Category rank#49,022
Street price$19
Power4 W
Performance per dollar43.16
Released2019

Specifications

BrandZephyra
ModelZephyra FN-4391 Pro
Size120 × 120 × 25 mm
Speed200–2,600 RPM (PWM)
Airflow88.4 CFM
Static pressure2.86 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4391 Pro 120mm PWM Case Fan”, https://vextor7.com/item/19701360 (accessed 2026-10-26).