Fresh Air Arc Flash Hood Ventilation System For OBERON HOOD. DESCRIPTION: ● Pocket mounted system works with LAN™ ARC™ and TCG Series hoods. ● Ventilation system takes 4 AA batteries included with fan. ● Color: Blue. One Size. NOTE: The fan is quoted separately and can be added to the hood. It is the customers choice to add the fan to the OBERON brand Hood Only.