Wind-driven ventilation ideal option for non-powered (NE) vent systems or as backup ventilation for power outages when the system is turned off to keep the room free of stale air. Used most commonly with the off-grid situation.
Wind-driven ventilation ideal option for non-powered (NE) vent systems or as backup ventilation for power outages when the system is turned off to keep the room free of stale air. Used most commonly with the off-grid situation.