Abstract: A vent for allowing airflow between the interior of a building and the exterior of the building while providing a barrier to entry into the building of unwanted exterior environment elements such as pests (e.g., insects and small animals), debris and precipitation is disclosed.

Abstract: A vent for a roof or other structure, comprising a cavity housing portion and an outside-housing extension portion including an extension footing extending from a lower edge of a louvered ventilation side. The extension footing includes footing sub-portions to obstruct gaps between the extension footing and the structure, such as a plurality of tabs extending from the extension footing corner-edge biasing the free edge of the tab downwardly below the extension footing.

Abstract: A vent for a roof or other structure, comprising a cavity housing portion and an outside-housing extension portion including an extension footing extending from a lower edge of a louvered ventilation side. The extension footing includes a means of obstructing gaps between the footing and the structure, such as a plurality of tabs extending from the footing corner-edge biasing the free edge of the tab downwardly below the footing.

Abstract: 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.

Abstract: 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.

Abstract: An adjustable-pitch ridge vent having accordion-shaped pleated end plugs for covering an opening at the peak of a roof. The ridge vent has a top panel having opposed lateral edges and having opposed ends, and has a flexible midsection parallel to the opposed lateral edges. A plurality of semi-circular supports extending downwardly from the underside of the top panel suspend the top panel above the roof. Lateral sidewall portions, which downwardly depend from the lateral edges of the vent, have louvered ventilation openings for allowing air to escape out of the opening at the roof's peak and pass from under the vent. Gutters with outwardly upturned lips and with drain openings are adjacent the ventilation openings. Coacting male and female joiners, respectively at the ends of the vent, sealingly join adjacent like ridge vents to each other.