The most innovative, field-adjustable ridge vent on the market converts from 12 in. to 10 in. or 9 in. ridge vent by simply scoring the groove on the top of the vent. Made from durable, no-break polypropylene, it won't rust or dent and closed external baffles make it less likely to collect debris resulting in diminished airflow. The patented PYTHON FlexFit 3-in-1 Ridge Vent is suitable for any roof pitch from 2/12 to 12/12 and provides a generous 84 sq. in. of Net Free Venting Area per piece. A vital piece for any shingled roof, the PYTHON FlexFit 3-in-1 Ridge Vent helps attics breath to keep cool and dry, reducing utility costs, preventing mold and mildew, extending shingle and roof-deck life, reducing air conditioning maintenance costs and eliminating damaging ice dams in winter months. Color: Black. Material: Plastic.