{"product_id":"ao-smith-100112550-concentric-termination-kit-3x4-inch","title":"Ao Smith 100112550 Concentric Termination Kit 3x4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe AO SMITH 100112550 is a concentric sidewall termination kit designed for direct-vent water heater and boiler systems requiring a 3 inch intake and a 4 inch exhaust. It allows a single wall penetration to serve both the intake and exhaust, reducing labor time and limiting the number of holes cut through an exterior wall. The louver-style termination functions as a built-in bird screen, blocking small animals, pests, and debris from entering the vent system. This kit accommodates wall thicknesses from 5.0 inches to 10.0 inches, making it suitable for a range of construction types. Licensed plumbers and HVAC technicians typically handle this installation.\u003c\/p\u003e\u003cp\u003eThis termination kit is intended for use with Takagi direct-vent models in residential applications. It is specifically sized for systems that require a 3 inch combustion air intake and a 4 inch exhaust outlet. The concentric design keeps both vent streams within a single penetration point through the sidewall, simplifying rough-in and finishing work. Compatible Takagi models are listed in the compatibility section below. Note that a backflow preventer is not included with this kit and must be sourced separately if required by the system or local code.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSingle-penetration concentric design handles both intake and exhaust through one sidewall opening\u003c\/li\u003e\n\u003cli\u003eAccommodates wall thicknesses from 5.0 inches to 10.0 inches\u003c\/li\u003e\n\u003cli\u003e3 inch intake and 4 inch exhaust configuration\u003c\/li\u003e\n\u003cli\u003eIntegrated louver termination acts as a bird screen against animals, pests, and debris\u003c\/li\u003e\n\u003cli\u003eDesigned for direct-vent system termination at the sidewall\u003c\/li\u003e\n\u003cli\u003eBackflow preventer not included — source separately if required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Takagi direct-vent models T-KJr2-IN, T-K4-IN, and T-D2-IN that require a 3 inch intake and a 4 inch exhaust connection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or HVAC technician in accordance with local mechanical codes and the appliance manufacturer instructions. Shut off gas supply and allow the appliance to cool completely before disconnecting any vent components. Ensure the wall penetration is properly sealed against weather infiltration after the termination is set. Verify local code requirements regarding backflow prevention, as this kit does not include a backflow preventer.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Termination Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Concentric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Size\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall Thickness Range\u003c\/strong\u003e: 5.0 inches to 10.0 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: AO SMITH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 100112550\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TAILWIND","offers":[{"title":"Default Title","offer_id":51149521322290,"sku":"100112550","price":541.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305988521.jpg?v=1778596181","url":"https:\/\/voomisupply.com\/products\/ao-smith-100112550-concentric-termination-kit-3x4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}