Thermalright TY-147A 140 mm， PWM fan， low noise emission.<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"> TY-147A Length 151mm x Width 26.5mm x Height 141mm </span></li><li><span class="a-list-item"> TY-147A Fan Speed: 300~1300 RPM (PWM) </span></li><li><span class="a-list-item"> TY-147A Fan noise level: 21~25dBA </span></li><li><span class="a-list-item"> Fan Airflow: 17-74CFM </span></li><li><span class="a-list-item"> PWM fan with 7 high efficient， low noise emssion fan blades. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51EqbfDDMaL.jpg" noproxy>