Hardware Spec Index

Caldera FN-4021 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN4021-PRO · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index390 (Case Fans scale)
Category rank#43,999
Street price$9
Power4 W
Performance per dollar43.33
Released2025

Specifications

BrandCaldera
ModelCaldera FN-4021 Pro
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise32 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4021 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/45800797 (accessed 2026-10-24).