Abstract: Irregular shaped louvers, such as chevron or curved shape louvers, on the sides of a roof ridge vent panel provide increased surface area and great Net Free Area values within a given space.

Abstract: A baffled roll vent for covering the ridge slot of a roof for allowing ventilation from the space of a building below the ridge slot, the baffled roll vent having a first vent section having a male part and a second vent section having a female part, wherein the male part of the first vent section attaches to the female part of the second vent section. The male and female parts are preferably located at opposite edges of each vent section, allowing each vent section in the baffled roll vent to attach to the next vent section in the baffled roll vent. A center hinge allows flexing of the panel to conform to the pitch of a roof.

Abstract: A baffled roll vent for covering the ridge slot of a roof for allowing ventilation from the space of a building below the ridge slot, the baffled roll vent comprising a unitary panel defined by a length and a width, said width terminating at discrete louver portions. The center hinge allows flexing of the panel to conform to the pitch of a roof. The baffled roll vent may be used with a fibrous mat placed under the louver portions to prevent entry of particulate matter from the outside environment.