{"product_id":"honeywell-mgii-12-barometric-draft-damper-12-in","title":"Honeywell mgii-12 Barometric Draft Damper 12 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HONEYWELL mgii-12 is a standard barometric draft damper designed to maintain consistent negative draft pressure in vented combustion appliance flue systems. The unit includes an integral collar for straightforward duct connection and is rated for use with natural gas, oil, wood, and coal-fired appliances. Barometric draft controls are passive, counterweighted dampers that open and close automatically in response to flue pressure changes, protecting the appliance from over-draft or backdraft conditions. This 12-inch model is sized for mid-to-large residential or light commercial heating equipment and is a field-installed component typically handled by licensed HVAC or heating technicians.\u003c\/p\u003e\n\u003cp\u003eThe mgii-12 is suited for installation in single-wall or double-wall flue connector piping downstream of the appliance draft hood or flue outlet. It is appropriate for use in residential and light commercial heating systems burning natural gas, fuel oil, wood, or coal. The included collar allows direct connection into the flue pipe without requiring additional adapters in standard installations. Applications include forced-air furnaces, boilers, water heaters, and solid-fuel appliances that require draft regulation at the flue connector.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e12-inch diameter sizing for mid-to-large residential and light commercial flue systems\u003c\/li\u003e\n  \u003cli\u003eCompatible with natural gas, fuel oil, wood, and coal-fired appliances\u003c\/li\u003e\n  \u003cli\u003eIncludes integral collar for direct flue pipe connection\u003c\/li\u003e\n  \u003cli\u003ePassive counterweighted design requires no electrical connection\u003c\/li\u003e\n  \u003cli\u003eAutomatically modulates to maintain consistent negative draft pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style barometric draft control for 12-inch flue connector piping on natural gas, oil, wood, and coal-fired residential and light commercial heating appliances.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC or heating technician in accordance with applicable local codes and the appliance manufacturer instructions. Shut down and allow the appliance to cool completely before working on the flue system. The damper must be positioned correctly in the flue connector with the pivot axis oriented horizontally and the counterweight adjusted per the manufacturer setup procedure. Verify draft performance after installation using a draft gauge before returning the appliance to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel Type Compatibility\u003c\/strong\u003e: Natural Gas, Oil, Wood, Coal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollar\u003c\/strong\u003e: Included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Type\u003c\/strong\u003e: Barometric Draft Damper\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HONEYWELL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: mgii-12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HONEYWELL","offers":[{"title":"Default Title","offer_id":51233385054514,"sku":"MGII-12","price":504.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307629051.jpg?v=1780098616","url":"https:\/\/voomisupply.com\/products\/honeywell-mgii-12-barometric-draft-damper-12-in","provider":"Voomi Supply","version":"1.0","type":"link"}