A few months back I had the chance to check out the 120mm Silverstone Air Penetrator fan. The Air Pentrator gave a new spin to the traditional fan design by incorporating a grill on the exhaust side that's designed to better channel the air. Having a more focused airflow makes the Air Penetrator a great choice for focusing airflow for CPU or component cooling. In my tests, the specialized grill design on the AP121 did actually show a very noticeable improvement on the focus of the airflow. Not wanting to leave out the growing number of cases and coolers incorporating 140mm fans into their designs, Silverstone has released a 140mm model into the Air Penetrator series.
Today I have both the AP141 140mm Air Penetrator here on the test test bed, along with Silverstone's FF141B 140mm fan filter that also recently hit the markets.