{"product_id":"io-hvac-controls-hd-na-3418-zone-damper-34x18-no-actuator","title":"Io Hvac Controls HD-NA-3418 Zone Damper 34x18 No Actuator","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IO HVAC CONTROLS HD-NA-3418 is a two-position zone damper sized at 34 x 18 inches, supplied without an actuator. It is designed to control airflow in ducted HVAC zoning systems by opening or closing to direct conditioned air to specific zones on demand. The damper accommodates a 5\/8-inch to 1\/2-inch shaft, allowing integration with a separately sourced actuator of the installer's choosing. At 16.04 pounds, this is a robust unit suited for commercial or larger residential duct systems. Licensed HVAC technicians performing zoning installations or replacements are the primary installers of this component.\u003c\/p\u003e\n\u003cp\u003eThis damper is applied in forced-air zoning systems where multiple temperature zones require independent airflow control. It fits rectangular duct configurations calling for a 34 x 18 inch opening. Typical installations include multi-zone residential systems, light commercial builds, and retrofit zoning projects where an existing duct run needs damper insertion. The packaged unit dimensions are 22 inches wide, 40 inches tall, and 8 inches deep, which should be accounted for during staging and handling on the job site.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e34 x 18 inch damper blade sizing for larger rectangular duct runs\u003c\/li\u003e\n  \u003cli\u003eTwo-position operation  -  fully open or fully closed  -  for standard zone control\u003c\/li\u003e\n  \u003cli\u003e5\/8-inch to 1\/2-inch shaft compatibility allows pairing with a wide range of actuators\u003c\/li\u003e\n  \u003cli\u003eSupplied without actuator, giving the installer flexibility to select the appropriate actuator for the control system in use\u003c\/li\u003e\n  \u003cli\u003eSubstantial 16.04-pound construction for durability in long-term zoning applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style zone damper replacement or new installation component for forced-air ducted HVAC systems requiring a 34 x 18 inch two-position rectangular damper with a 5\/8-inch to 1\/2-inch actuator shaft.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with forced-air zoning systems and local mechanical codes. Disconnect and lock out power to the air handler and zoning control board before inserting or replacing the damper in the duct. The actuator is not included and must be sourced and mounted separately; verify actuator shaft compatibility with the 5\/8-inch to 1\/2-inch shaft specification before ordering. Seal all duct joints around the damper frame with approved duct sealant or foil tape per applicable mechanical code requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamper Size\u003c\/strong\u003e: 34 x 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Two-position (open\/closed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft Size\u003c\/strong\u003e: 5\/8 inch to 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Included\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 16.04 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 40 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Depth\u003c\/strong\u003e: 8 inches\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: IO HVAC CONTROLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HD-NA-3418\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IO HVAC CONTROLS","offers":[{"title":"Default Title","offer_id":67952117776690,"sku":"HD-NA-3418","price":434.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8e7ebe2e8a13c1ae983e6c74260ed8a4_ab166ca6-4ab4-4e18-bb96-03a8279a534c.jpg?v=1791747251","url":"https:\/\/voomisupply.com\/products\/io-hvac-controls-hd-na-3418-zone-damper-34x18-no-actuator","provider":"Voomi Supply","version":"1.0","type":"link"}