{"product_id":"round-back-intake-roof-vent-12-diameter-4-tall-collar-113-sq-in-nfa-model-rbv-12-c4-in","title":"Model RBV-12-C4-IN |Round Back Vent | 12\" Diameter| 4\" Tall Collar | Intake | 113 Sq. In. NFA","description":"\u003ch3\u003e\u003cstrong\u003e12 inch Intake Roof Vent | Round Back Intake Roof Vent | RBV-12-C4-IN\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis intake roof vent is 12 inches in diameter and has a 4-inch tall collar. In other words, this vent has 2 inches of clearance between the base and the inner louvers. The model RBV-12-C4-IN has 113 inches of net free area (NFA), which means each vent will ventilate 470 square feet of attic space.\u003c\/p\u003e\n\u003ch3\u003e\u003cem\u003eThis vent is a hybrid design where 1\/3 of the collar is closed to prevent runoff from entering. \u003c\/em\u003e\u003c\/h3\u003e\n\u003cp\u003eTo determine the number of roof vents you may need, see the \u003ca href=\"https:\/\/roofvents.com\/active-ventilation-products-attic-vent-calculator\/\"\u003eVent Calculator\u003c\/a\u003e. Each 12-inch roof vent has a 17” x 17” square flange.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eKeeps your home comfortable and energy-efficient\u003c\/li\u003e\n\u003cli\u003eLouver design prevents water from splashing inside\u003c\/li\u003e\n\u003cli\u003eInner louvers prevent insects and animals from entering the vent\u003c\/li\u003e\n\u003cli\u003eRound aerodynamic design can withstand harsh weather\u003c\/li\u003e\n\u003cli\u003eNoiseless – does not require electricity to exhaust air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhere to install: The lower end of the roof\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis 12-inch roof vent is ideal for roofs with a 2\/12 to 12\/12 roof pitch in \u003ca href=\"https:\/\/roofvents.com\/intake-vent-clearance-for-all-climates\/\"\u003eclimate zones 1-3\u003c\/a\u003e. This intake roof vent should go near the lower end of the roof.\u003c\/p\u003e\n\u003cp\u003eTo determine the number of vents you may need for proper attic ventilation, see the \u003ca href=\"https:\/\/roofvents.com\/active-ventilation-products-attic-vent-calculator\/\"\u003eVent Calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch4\u003e\n\u003cstrong\u003eHow it Operates\u003c\/strong\u003e:\u003c\/h4\u003e\n\u003cp\u003eThe Round Back Intake Roof Vent will provide fresh air into the attic. Without proper rooftop ventilation, heat and moisture may cause the structure to decay. As a result, ventilation helps to make a home more comfortable and energy efficient.\u003c\/p\u003e\n\u003cp\u003eThe top 1\/3 of the collar is closed to prevent runoff from splashing inside the vent. \u003cem\u003e\u003cstrong\u003eThis side is to be facing the ridge. \u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe vented lid is manufactured from one piece of spun aluminum, which prevents rain and snow from entering the attic. The round design is aerodynamic and can withstand wind pressure exceeding 200 mph. All Round Back roof vents are resistant to corrosion and will remain rust-free for the life of the roof.\u003c\/p\u003e\n\u003cp\u003eThe inner louvers of the roof vent keep insects and animals from entering the attic. The louvers also allow the air to flow freely to the outside.\u003c\/p\u003e\n\u003cp\u003eThis 12-inch roof vent is also great for residential roof applications because of its aesthetically pleasing appearance. Because of their low profile, the Round Back Vents can also be \u003ca href=\"https:\/\/roofvents.com\/color-chart-2\/\"\u003epainted to match the color\u003c\/a\u003e of asphalt shingle roofs.\u003c\/p\u003e\n\u003cp\u003eFor any questions, please see the \u003ca href=\"https:\/\/roofvents.com\/frequently-asked-questions\/\"\u003efrequently asked questions page\u003c\/a\u003e. If you still have questions, email the sales team at \u003ca href=\"mailto:sales@roofvents.com\"\u003esales@roofvents.com\u003c\/a\u003e or call 845-565-7770\u003c\/p\u003e","brand":"Active Ventilation Products","offers":[{"title":"Aluminum Unpainted","offer_id":50177837105402,"sku":"RBV-12-C4-IN","price":58.0,"currency_code":"USD","in_stock":true},{"title":"Standard Colors","offer_id":50177837138170,"sku":"RBV-12-C4-IN","price":76.0,"currency_code":"USD","in_stock":true},{"title":"Premium Colors","offer_id":50177837170938,"sku":"RBV-12-C4-IN","price":94.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/1869\/1578\/files\/RBV-12-C4-side.jpg?v=1770647554","url":"https:\/\/roofvents.com\/products\/round-back-intake-roof-vent-12-diameter-4-tall-collar-113-sq-in-nfa-model-rbv-12-c4-in","provider":"Active Ventilation Products","version":"1.0","type":"link"}