An apparatus includes a housing having a ventilation opening. A component such as a generator set can be disposed within an interior space of the housing. A baffle can be disposed within the interior space of the housing at a location that obstructs an acoustic line of sight between the ventilation opening and the component to eliminate or otherwise reduce a sound signature of the component. The baffle can also be configured to accumulate water from the ventilation opening. A drain can also be provided to aid in the removal of water accumulated by the baffle and route the water outside the housing.