USTF12038 (DC axial ball bearing fan, 120mm sq x 38mm thk) PRODUCT # 27 ADDED ON 20th Mar,2012 URL http://www.ustoyofan.com/kb/print_article.php/faq_qanda.php?id=27

Size: 4.72 in sq. x 1.5 in. thk (120mm sq. x 38mm thk.)  Airflow: 85 - 120 CFM  Acoustical Noise 34 - 44.5 dB (A)       Refer to PDF Spec Sheet for Details