Hardware Spec Index

Zephyra FN-4021 SE 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN4021-SE · Released 2024 · Updated 2026-10-21

Key facts

Benchmark index336 (Case Fans scale)
Category rank#12,388
Street price$9
Power3 W
Performance per dollar37.33
Released2024

Specifications

BrandZephyra
ModelZephyra FN-4021 SE
Size120 × 120 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise27 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4021 SE 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/46988383 (accessed 2026-10-21).