US Patent 10538919 Spaced vent for metal roofs

A roof ventilation system is provided that is configured to be mounted on a profiled paneled roof for venting air from a vent opening in the roof. The roof ventilation system can include a vent part having a plurality of vent passages, a plurality of plies configured to be mounted substantially horizontal to the profiled roof panels and a plurality of cross members extending between each ply, wherein the plies and cross members define the vent passages; and a filter member attached to outer surfaces of the vent part. The filter member can be made from a resilient material, and the filter member may include extensions extending beyond a length of the vent part.