RAM Mixed-Flow Inline Fan with LeadOverview The RAM Mixed Flow inline fan with lead is an affordable and high performance extractor fan. It's a plug and play system and therefore no additional parts are required for the fan to function. The unit has 2 speed settings, which offer increased control over the climate in the grow room. The unit moves high volumes of air per hour and it's perfect for beginner growers. General Information It's a plug and play system; The unit has 2 speed