{"product_id":"lomanco-bib12-12-inch-turbine-roof-ventilator-mill-aluminum","title":"Lomanco BIB12 12 Inch Turbine Roof Ventilator Mill Aluminum","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe LOMANCO BIB12 is a 12-inch turbine ventilator designed for residential and light commercial roof ventilation. Built from mill aluminum, it resists rust and corrosion without paint or coatings. The turbine spins with natural wind movement to continuously exhaust heat and moisture from the attic space, reducing thermal load on the structure below. Permanently lubricated upper and lower bearings eliminate the need for field maintenance after installation. The rigid spider-type internal brace structure keeps the turbine true under wind load and over time. Roofing contractors and HVAC technicians install this unit as part of a balanced attic ventilation system.\u003c\/p\u003e\u003cp\u003eThe BIB12 is suited for residential attic ventilation on roofs with pitches up to 12 over 12. The vari-pitch base adjusts to match the roof slope without cutting additional material or fabricating custom flashing. The large flashing footprint provides a broad seal against weather infiltration at the roof deck penetration. This ventilator is appropriate for new construction installs and replacement of failed or undersized turbine units on existing structures where a 12-inch throat size is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12-inch turbine throat diameter for high-volume passive exhaust ventilation\u003c\/li\u003e\n\u003cli\u003eMill aluminum construction — rust-free with no surface coating to chip or peel\u003c\/li\u003e\n\u003cli\u003ePermanently lubricated upper and lower bearings — no maintenance required after install\u003c\/li\u003e\n\u003cli\u003eRigid spider-type internal brace structure maintains roundness and balance under load\u003c\/li\u003e\n\u003cli\u003eVari-pitch base adjusts to roof pitches up to 12 over 12\u003c\/li\u003e\n\u003cli\u003eLarge flashing included for a weather-tight roof deck seal\u003c\/li\u003e\n\u003cli\u003eLifetime manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-install turbine ventilator for residential and light commercial sloped roofs requiring a 12-inch turbine unit with an adjustable-pitch base.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by roofing contractors or qualified HVAC technicians following local building code requirements for attic ventilation. The roof deck penetration should be cut to the turbine throat diameter and the flashing set in roofing mastic before fastening to the deck. Adjust the vari-pitch base to match the roof slope before securing the unit. Always install turbine ventilators as part of a balanced system that includes adequate soffit intake area to prevent negative-pressure draw through unintended pathways.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThroat Diameter\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Mill Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Permanently lubricated upper and lower bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Roof Pitch\u003c\/strong\u003e: 12 over 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.35 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: Lifetime manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LOMANCO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BIB12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOMANCO","offers":[{"title":"Default Title","offer_id":51523825860914,"sku":"BIB12","price":122.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bb22d4798059ad350c815700a292ce6e.jpg?v=1785444036","url":"https:\/\/voomisupply.com\/products\/lomanco-bib12-12-inch-turbine-roof-ventilator-mill-aluminum","provider":"Voomi Supply","version":"1.0","type":"link"}