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Ridge vents, methods of their manufacture, and methods of their use are provided. The preferred ridge vent includes an elongated flexible member having a central panel portion comprising support means for supporting the central panel above a roof, a pair of side portions containing a vent opening an

Ridge vents, methods of their manufacture, and methods of their use are provided. The preferred ridge vent includes an elongated flexible member having a central panel portion comprising support means for supporting the central panel above a roof, a pair of side portions containing a vent opening and a baffle. The baffle is adjustable from a relatively flat position to a relatively vertical position with respect to the roof. Having an adjustable baffle permits the ridge vent to be rolled more easily, and assists in lower cost molding of the vent.

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1. A rollable ridge vent for covering an opening of a roof ridge, comprising:an elongated flexible member having a central panel portion, a pair of longitudinal side portions and a pair of transverse ends; said central panel portion comprising a plurality of support ribs for supporting said central

1. A rollable ridge vent for covering an opening of a roof ridge, comprising:an elongated flexible member having a central panel portion, a pair of longitudinal side portions and a pair of transverse ends; said central panel portion comprising a plurality of support ribs for supporting said central panel portion above said roof; each of said side portions containing a vent opening and a baffle disposed laterally from said vent opening; each of said baffles being oriented in a first direction relative to said central panel portion for at least a period of time prior to installation and being oriented in a second direction relative to said central panel portion after said installation. 2. The ridge vent of claim 1 wherein said central panel portion is biaxially flexible.3. The ridge vent of claim 2 wherein said first direction is relatively flat with respect to a roof said ridge vent is being placed upon.4. The ridge vent of claim 3 wherein said second direction is more vertical than said first direction.5. The ridge vent of claim 1 further comprising support means for assisting said baffles to be oriented from said first direction to said second direction.6. The ridge vent of claim 5 wherein said support means comprises a clip, external standoff, stressed portion of said flexible member, or combination thereof.7. A method of installing a ridge vent over an opening of a roof ridge, comprising:providing a ridge vent including an elongated flexible member having a central panel portion, a pair of longitudinal side portions and a pair of transverse ends; each of said side portions containing a vent opening and a baffle disposed laterally from said vent opening; said central panel portion comprising a plurality of support ribs for supporting said central panel portion above said roof; covering an opening of a roof ridge with said ridge vent; orienting said baffles from a first direction to a second direction relative to said central panel portion; and affixing said ridge vent to said roof ridge so as to allow air to escape from beneath said central panel portion to ventilate a space beneath said roof. 8. The method of claim 7 wherein said orientation step comprises employing support means for assisting said baffles to achieve said second position.9. The method of claim 7 wherein said baffles are oriented from said first direction to said second direction either manually with clips, fasteners or stand-offs, by employing a tendency of the flexible member to orient itself while being applied to said roof ridge, or a combination thereof.10. The method of claim 7 further comprising disposing a plurality of shingles over a portion of said ridge vent.11. The method of claim 10 further comprising nailing through a portion of said shingles and said roof vent to secure said shingles and said roof vent.12. A method of making a ridge vent, comprising:providing a mold having upper and lower mold sections forming a mold cavity therebetween; disposing a first quantity of a polymeric material in said mold cavity between said mold sections; forming a first ridge vent section in said mold cavity; indexing said first ridge vent section so that it is substantially moved beyond said mold cavity but remains in contact with said mold; disposing a second quantity of polymer between said mold sections; and forming a second ridge vent section which is connected to said first ridge vent section. 13. The method of claim 12 wherein said first ridge vent section is automatically indexed forward prior to forming said second ridge vent section.14. The method of claim 13 wherein said mold sections open and close between forming said first ridge vent section and said second ridge vent section.15. The method of claim 12 wherein said disposing steps comprise injection molding extrusion or compression molding.16. A ridge vent for covering an opening of a roof ridge, comprising:an elongated flexible member having a bi-axially flexible central panel, a pair of longitudinal side portions and a pair of transverse ends; said pair of side portions each containing a baffle and a slotted vent opening for directing air current; said central panel portion comprising a plurality of descending support ribs for supporting said central panel portion above said roof; said baffle of each side portion being oriented in a first direction relative to a proximate part of said central panel portion in said roll for at least a portion of the time prior to installation, and being oriented in a second direction relative to said proximate part of said central panel portion after said installation on said roof ridge. 17. The ridge vent of claim 16 wherein said central panel portion is further supported by an internal, integral corrugated gusset.18. The ridge vent of claim 16 wherein said elongated flexible member is manufactured by index molding.19. The ridge vent of claim 16 wherein said flexible member comprises a filter.20. The ridge vent of claim 19 wherein said filter is melt bonded to at least said support ribs.21. A one-piece, rollable, ridge vent for covering an opening on a roof, comprising an elongated flexible member having a central panel portion comprising support means for supporting said central panel above a roof; a pair of side portions containing a vent opening and a baffle; said baffle being adjustable from a relatively flat position to a relatively vertical position with respect to said roof.