{"product_id":"air-flow-products-77f161618-transition-boot-16x16-18-inch","title":"Air Flow Products 77F161618 Transition Boot 16x16 18 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Air Flow Products 77F161618 is a straight transition boot with flange designed to connect square or rectangular ductwork to a round collar in forced-air HVAC systems. The boot features a 16x16 inch square opening and an 18-inch round collar, making it suited for larger trunk-to-branch transitions in residential and light commercial duct installations. Sheet metal workers and HVAC installers use this fitting to adapt main trunk ducts to round flex or rigid branch runs cleanly and efficiently.\u003c\/p\u003e\n\u003cp\u003eThis fitting is used in forced-air heating and cooling duct systems where a square-to-round transition is required. It is a common component in residential new construction and retrofit installations where round branch ducts feed off a rectangular main trunk. The integrated flange simplifies connection to the duct opening and supports a secure, low-leak fit at the transition point.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSquare-to-round transition profile for trunk-to-branch duct connections\u003c\/li\u003e\n  \u003cli\u003e16x16 inch square inlet matches standard rectangular duct sizing\u003c\/li\u003e\n  \u003cli\u003e18-inch round collar for connection to round flex or rigid duct\u003c\/li\u003e\n  \u003cli\u003eIntegrated flange for secure, low-leak attachment at the duct opening\u003c\/li\u003e\n  \u003cli\u003eStraight boot orientation for in-line duct transitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style sheet metal fitting for use in residential and light commercial forced-air duct systems requiring a square-to-round transition at a 16x16 inch opening with an 18-inch round collar outlet.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed sheet metal workers or qualified HVAC technicians. Power down the air handler or furnace before working on connected ductwork. Seal all joints with UL-listed duct sealant or approved metal tape per local mechanical code requirements. Secure the round collar to branch duct with appropriate clamps or drive cleats as required by the installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Opening\u003c\/strong\u003e: 16x16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRound Collar Diameter\u003c\/strong\u003e: 18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransition Type\u003c\/strong\u003e: Square to Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoot Style\u003c\/strong\u003e: Straight with Flange\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: Air Flow Products\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 77F161618\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AIR FLOW PRODUCTS","offers":[{"title":"Default Title","offer_id":51347941261618,"sku":"77F161618","price":95.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310552907.jpg?v=1782116378","url":"https:\/\/voomisupply.com\/products\/air-flow-products-77f161618-transition-boot-16x16-18-inch","provider":"Voomi Supply","version":"1.0","type":"link"}