Hardware Spec Index

Brontix FN-9991 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN9991-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index361 (Case Fans scale)
Category rank#18,743
Street price$19
Power4 W
Performance per dollar19.00
Released2019

Specifications

BrandBrontix
ModelBrontix FN-9991 Ultra
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise33 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-9991 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/14708271 (accessed 2026-10-21).