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A roof ridge vent for covering an opening at a peak of a roof. The roof ridge vent includes a top panel portion having first and second opposed lateral edges and having first and second opposed ends. The roof ridge vent includes a plurality of support members depending downwardly from the underside

A roof ridge vent for covering an opening at a peak of a roof. The roof ridge vent includes a top panel portion having first and second opposed lateral edges and having first and second opposed ends. The roof ridge vent includes a plurality of support members depending downwardly from the underside of the top panel portion, and the roof ridge vent also includes first and second lateral ventilation louvers respectively disposed adjacent the first and second opposed lateral edges. The vent also has first and second undulating sidewalls respectively downwardly depending from, and adjacent to, the first and second opposed lateral edges, with each of the sidewalls being non-planar and undulating along its said respective lateral edge such that the roof ridge vent may be flexingly rolled lengthwise into a spiral roll prior to installation and further may be unrolled lengthwise during installation over the peak of a roof. A method is also described for weldedly bonding sections of roof ridge vent by heating adjacent ends of successive sections above the melting point of the thermoplastic material, then abutting the heated ends, and then allowing the ends to cool below the melting point of the thermoplastic material. A variety of additional ways are shown for joining successive sections of roof ridge vent so as to create an elongated rollable length of roof ridge vent.

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[ I claim:] [1.]1. A roof ridge vent for covering an opening at a peak of a roof, said roof ridge vent comprising:(a) a top panel portion having first and second opposed lateral edges and having first and second opposed ends; said top panel portion having an underside and further having a midsection

[ I claim:] [1.]1. A roof ridge vent for covering an opening at a peak of a roof, said roof ridge vent comprising:(a) a top panel portion having first and second opposed lateral edges and having first and second opposed ends; said top panel portion having an underside and further having a midsection substantially parallel to said first and second opposed lateral edges;(b) support means for supporting said top panel portion above the roof, said support means comprising a plurality of support members depending downwardly from said underside of said top panel portion;(c) first and second lateral ventilation means respectively disposed adjacent said first and second opposed lateral edges; and(d) first and second undulating sidewalls respectively downwardly depending from, and adjacent to, said first and second opposed lateral edges, each of said first and second sidewalls being non-planar and undulating along its said respective lateral edge such that said roof ridge vent may be flexingly rolled lengthwise into a spiral roll prior to installation and further may be unrolled lengthwise during installation over the peak of a roof, said undulating of said first sidewall being in and out relative to said second sidewall and said undulating of said second sidewall being in and out relative to said first sidewall.