{"product_id":"research-products-6612-round-zone-damper-6600-series","title":"Research Products 6612 Round Zone Damper 6600 Series","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe RESEARCH PRODUCTS 6612 is a round zone damper with an integrated synchronous motor, designed for use in residential and light commercial HVAC zoning systems. It operates on a power-closed, spring-open actuation sequence, meaning the motor drives the blade closed and the spring returns it to the open position on power loss — a fail-safe configuration common in multi-zone forced-air applications. The motor runs at 24 volts AC at 60 Hz, draws 6 watts, and is rated at 10 VA. At 12.75 inches in length, this damper fits standard round duct runs and is compatible with both rigid metal ductwork and flexible duct installations.\u003c\/p\u003e\u003cp\u003eThe 6612 is used in zoned forced-air HVAC systems where individual rooms or areas require independent temperature control. The round form factor and galvanized steel construction make it suitable for new construction and retrofit installs alike. Adjustable blade positioning allows the installer to fine-tune airflow for balancing purposes. An integrated foam seal reduces air bypass around the blade when the damper is in the closed position. Licensed HVAC technicians typically install this damper as part of a zone control system paired with a zone controller board and low-voltage thermostat wiring.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePower-closed, spring-open actuation provides fail-safe open operation on loss of power\u003c\/li\u003e\n\u003cli\u003eSynchronous motor rated at 24 volts AC, 60 Hz, 6 watts, 10 VA\u003c\/li\u003e\n\u003cli\u003eGalvanized steel construction for corrosion resistance in duct environments\u003c\/li\u003e\n\u003cli\u003eAdjustable blade positioning for airflow balancing during commissioning\u003c\/li\u003e\n\u003cli\u003eIntegrated foam seal minimizes air leakage in the closed position\u003c\/li\u003e\n\u003cli\u003eCompatible with rigid metal ductwork and flexible duct installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation zone damper for residential and light commercial forced-air zoning systems using round ductwork. Part of the Aprilaire 6600 Series zone damper product line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with low-voltage zoning controls and ductwork. Power down the air handler and de-energize all low-voltage control circuits before installing or replacing the damper. Ensure the damper is oriented correctly with respect to airflow direction as marked on the unit. Secure duct connections per local mechanical code requirements and verify motor operation through the zone controller before returning the system to service.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 6600 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Galvanized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type\u003c\/strong\u003e: Power Closed, Spring Open, Synchronous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Voltage\u003c\/strong\u003e: 24 volts AC at 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Power\u003c\/strong\u003e: 6 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor VA Rating\u003c\/strong\u003e: 10 VA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 1 in-WC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 12.75 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: RESEARCH PRODUCTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6612\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RESEARCH PRODUCTS","offers":[{"title":"Default Title","offer_id":51138431779122,"sku":"6612","price":138.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305532967.jpg?v=1778256335","url":"https:\/\/voomisupply.com\/products\/research-products-6612-round-zone-damper-6600-series","provider":"Voomi Supply","version":"1.0","type":"link"}