5-Pack Arctic P12 PWM PST 120 mm Case Fan $30.99 free shipping

Amazon Link
These are nice PWM fans, some noise around 1100 rpms based on reviews.
Individually they sell for 7.99 each. Previous Front Page Deal at this price.
Specs:
Fan speed: 200–1800 RPM
Airflow: 56.3 CFM/95.65 m³/h (@ 1800 RPM)
Noise Level: 0.3 Sone (@ 1800 RPM)
Pin: 4-pin
You have to choose Arctic as the seller for the free shipping with Prime.
https://www.amazon.com/ARCTIC-ACF…r=8-1&th=1