The GAF Gun Nail Cobra Ridge Vent is a shingle-over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic. Low profile fiber mat permits maximum airflow yet prevents water and insect infestation. 3/4 - lowest profile in the industry. No fabric overwrap or filters to clog or deteriorate. Flexible, easy to handle. Includes 1-3/4 coil roofing nails. Cobra gun nailable ridge vent net free area - 14.1 sq. in./linear ft. Low profile fiber mat permits maximum airflow yet prevents water and insect infestation.3/4" lowest profile in the industry.No fabric overwrap or filters to clog or deteriorate.Flexible, easy to handle.Conforms to roof pitches from 2/12 to 20/12.Eligible for up to a lifetime ltd. warranty when installed on lifetime shingle roofs.Manufactured with 100% recycled fiber to help reduce the amount of material entering landfills.Fast and easy installation with no complicated fitting, wrapping, nail gun adapters, connectors, or end-plugs needed.