Koolance released the FAN-12038HBK-184, a new 120mm fan that reminds me of of Delta's good old high-CFM fans and Vantec's Tornado series. This new badboy delivers an airflow of 183.5CFM and a static pressure of 20.4mm-H2O. It's a real screamer though, the fan blades spin at 4000RPM and generate a noise level of up to 59dBA!
The company recommends to use a fan grill for safety and watch out with fan controllers because this 120mm fan draws a whopping 24W. You can buy it at Koolance's webshop for only $11.99.