A system is disclosed that includes a bay within a computer system, such as a fan bay. The system further includes a baffle positioned around a section of a perimeter of the bay. The baffle is configured to move along the section. The baffle includes a projection that extends into the bay. The projection is configured to abut against a module, such as a fan module, so that the module drives the baffle from a closed position to an open position as the module is inserted into the bay.