Arctic F12 PWM PST Value pack Standard Low Noise PWM Controlled Case Fan with PST Feature Cooling， 5 Pack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Pack of 5 - 120 x 120 x 25 mm PWM controlled standard case fan. </span></li><li><span class="a-list-item"> Fluid dynamic bearing assures long service life at a min. noise level of max. 0.3 sone. </span></li><li><span class="a-list-item"> 600 - 1，350 RPM / Max. Airflow 74 CFM (126 m³/h). </span></li><li><span class="a-list-item"> Add more fans to one control signal with Patented PWM Sharing Technology (PST). </span></li><li><span class="a-list-item"> Two way installation possible. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/414x2hlmIwL.jpg" noproxy>