{"product_id":"hart-cooley-155-12-brn-12-inch-ring-damper-assembly","title":"Hart Cooley 155 12 Brn 12 Inch Ring Damper Assembly","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HART COOLEY 155 12 brn is a 12-inch ring damper assembly designed for use with 12-inch 150 series diffusers and grilles. This assembly provides airflow control at the register or diffuser level, allowing technicians to balance air distribution across supply outlets. The ring damper mounts directly behind the face of compatible diffusers, giving HVAC installers a straightforward way to throttle or redirect conditioned air without modifying the ductwork. It is a standard component in residential and light commercial forced-air systems where zone-level flow adjustment is required.\u003c\/p\u003e\u003cp\u003eThis ring damper assembly is suited for installation in ceiling or wall supply outlets using 12-inch diffusers from the 150 series product line. HVAC technicians and sheet metal contractors typically install this component during new construction rough-in or as a replacement part during a service call when the original damper is damaged or missing. The brown finish coordinates with diffuser face aesthetics in certain interior applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e12-inch ring damper sized for 12-inch 150 series diffusers\u003c\/li\u003e\n\u003cli\u003eProvides airflow balancing at the supply outlet without duct modification\u003c\/li\u003e\n\u003cli\u003eRing-style assembly for direct installation behind diffuser face\u003c\/li\u003e\n\u003cli\u003eBrown finish for aesthetic coordination with compatible diffuser faces\u003c\/li\u003e\n\u003cli\u003eMetal construction for durability in forced-air supply applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement ring damper assembly for use with 12-inch 150 series diffusers and grilles.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling unit and confirm airflow has stopped before removing the existing diffuser or damper assembly. The ring damper seats behind the diffuser face; ensure the damper blade moves freely and seats correctly before reinstalling the diffuser. Follow local mechanical codes and the system manufacturer guidance for airflow balancing procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Series\u003c\/strong\u003e: 150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly Type\u003c\/strong\u003e: Ring Damper\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HART COOLEY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 155 12 brn\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HART \u0026 COOLEY","offers":[{"title":"Default Title","offer_id":51233386299698,"sku":"155 12 BRN","price":78.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307632808.jpg?v=1780098651","url":"https:\/\/voomisupply.com\/products\/hart-cooley-155-12-brn-12-inch-ring-damper-assembly","provider":"Voomi Supply","version":"1.0","type":"link"}