Hardware Spec Index

Teralux FN-3491 Ultra 140mm PWM Case Fan

Case Fans · Teralux · SKU FN3491-ULTRA · Released 2019 · Updated 2026-10-23

Key facts

Benchmark index704 (Case Fans scale)
Category rank#18,057
Street price$19
Power3 W
Performance per dollar37.05
Released2019

Specifications

BrandTeralux
ModelTeralux FN-3491 Ultra
Size140 × 140 × 25 mm
Speed300–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise25 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-3491 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/2602146 (accessed 2026-10-23).