Delta Fans
Delta fans are the most extreme cooling fans available reaching extrreme fan speeds as well as airflow way over 200 (cfm).  
These fans are intended  for extreme high performance applications such as extreme overclocking.
120mm Delta Fans
delta tfb1212 extreme high speed 120mm x 38mm 220.01 (cfm) fan
delta efb1212she high speed triple blade 120mm x 38mm
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