VENTILATOR SYSTEM

摘要

VENTILATOR SYSTEM A ventilator system comprising an exterior panel member and an interior baffle member in sealed engagement with a back side of the exterior panel member and at a plurality of vertically spaced locations whereby to define therebetween an air chamber. A first air passage is provided in the panel member and communicates with the air chamber. A second air passage is provided in the baffle member and communicates with the air chamber. A valve is provided within the air chamber which is acted upon by an air stream entering the air chamber through the first air passage to close off the air flow through the air chamber when the force of the air stream acting on the valve exceeds a predetermined level.