{"product_id":"arzel-zoning-technology-l80-465-bypass-damper-10in","title":"Arzel Zoning Technology l80-465 Bypass Damper 10in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ARZEL ZONING TECHNOLOGY l80-465 is a 10-inch round barometric bypass damper designed for zoned HVAC systems. It uses a weighted arm mechanism that opens passively in response to pressure differential, bypassing excess conditioned air when zones close. This eliminates the need for electronic actuators or control wiring on the bypass leg. Licensed HVAC technicians install this damper as part of a zone pressure-relief strategy in residential and light-commercial duct systems. The 10-inch round form factor fits standard round duct configurations and requires no external power source to operate.\u003c\/p\u003e\u003cp\u003eThe l80-465 is recommended for single-stage heating and cooling applications where the zone sizes are nearly equal. Equal or near-equal zone sizing is critical for proper weighted-arm damper performance, as significant zone imbalance can cause the damper to operate outside its intended pressure range. This damper is suited for residential zoned forced-air systems where a simple, passive bypass solution is preferred over motorized alternatives.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e10-inch round diameter fits standard round bypass duct configurations\u003c\/li\u003e\n\u003cli\u003eWeighted arm design operates passively without electronic controls or wiring\u003c\/li\u003e\n\u003cli\u003eNo external power required for operation\u003c\/li\u003e\n\u003cli\u003eRecommended for single-stage systems with nearly equal zone sizes\u003c\/li\u003e\n\u003cli\u003eStraightforward mechanical design reduces points of failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation bypass damper for 10-inch round duct zoning systems in single-stage residential forced-air applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with zoned forced-air system design. Power down the air handler or furnace at the disconnect before cutting into existing ductwork. Ensure the bypass duct run is sized and routed according to the zoning system manufacturer guidelines. The damper must be oriented correctly so the weighted arm swings freely and the blade opens in the intended airflow direction.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 10 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight\u003c\/strong\u003e: 5.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Width\u003c\/strong\u003e: 12.50 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Length\u003c\/strong\u003e: 12.60 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Height\u003c\/strong\u003e: 13.10 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ARZEL ZONING TECHNOLOGY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: l80-465\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARZEL ZONING TECHNOLOGY","offers":[{"title":"Default Title","offer_id":51620487954738,"sku":"L80-465","price":382.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/renderImage_4041d486-87f5-4c22-bb70-630b5e37b5f2.jpg?v=1787343391","url":"https:\/\/voomisupply.com\/products\/arzel-zoning-technology-l80-465-bypass-damper-10in","provider":"Voomi Supply","version":"1.0","type":"link"}