Just Cooler ST-900 Case Exhaust Fan w/4-Pin Connector - Turn any 3.5" Drive Bay into an Exhaust Fan! Just Cooler ST-900 Case Exhaust Fan w/4-Pin Connector General Features: Mounts in virtually any 3.5-inch drive bay 3.5-inch axial fan DC 12V 20,000 hours MTBF 2800 rated RPM 23 dBA noise level 40 CFM 4-pin Molex power pass thourgh connector (large drive power connector) Unit Dimensions: 1 x 4 x 9.75-inches (H x W x L approximent)