{"product_id":"southwark-metal-51f_4x10x5-flanged-ceiling-boot-4x10-to-5in","title":"Southwark Metal 51F_4X10X5 Flanged Ceiling Boot 4x10 to 5in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 51F_4X10X5 is a straight flanged sheet metal ceiling boot designed to transition from a rectangular duct opening to a round collar in residential and light commercial HVAC duct systems. The boot measures 4 inches by 10 inches at the rectangular end and connects to a 5-inch round collar at the outlet. Fabricated from hot-dipped galvanized steel, it delivers corrosion resistance suited to attic, basement, and crawlspace duct installations. The integrated flange allows secure mounting to ceiling grid or framing. HVAC installers and sheet metal mechanics are the primary trade installing this fitting.\u003c\/p\u003e\n\u003cp\u003eThis boot is used where a rectangular supply or return duct opening transitions to a round duct run, typically at the floor or ceiling plane in forced-air residential systems. The straight body pattern keeps airflow direct and minimizes turbulence at the transition point. It is designed for use with 126 rail ceiling grid systems, making it a common component in suspended ceiling HVAC layouts. The flanged design allows flush mounting against ceiling material for a clean finished appearance at the register opening.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot-dipped galvanized steel construction for corrosion resistance in conditioned and unconditioned spaces\u003c\/li\u003e\n  \u003cli\u003eStraight body pattern for direct rectangular-to-round airflow transition\u003c\/li\u003e\n  \u003cli\u003eIntegrated flange for secure ceiling or framing attachment\u003c\/li\u003e\n  \u003cli\u003e4-inch by 10-inch rectangular inlet transitions to 5-inch round collar outlet\u003c\/li\u003e\n  \u003cli\u003eDesigned for use with 126 rail ceiling grid systems\u003c\/li\u003e\n  \u003cli\u003eMeets ACCA and SMACNA applicable standards for sheet metal duct fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 126 rail ceiling grid systems. Suitable as an OEM-style sheet metal fitting in residential and light commercial forced-air duct systems requiring a rectangular-to-round ceiling boot transition.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or sheet metal mechanic in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handling system and confirm zero airflow before fitting installation or duct modification. Seal all joints with UL-listed duct sealant or approved metal tape per SMACNA guidelines to prevent air leakage. Secure the flange to ceiling framing or grid rail using appropriate fasteners to maintain a rigid, vibration-free connection.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dipped Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Pattern\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRectangular Inlet Size\u003c\/strong\u003e: 4 inches x 10 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRound Outlet Diameter\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Ceiling, Rectangular to Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInclusions\u003c\/strong\u003e: Flange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Standards\u003c\/strong\u003e: ACCA, SMACNA\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: SOUTHWARK METAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 51F_4X10X5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51283998507314,"sku":"51F_4X10X5","price":22.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309278697.jpg?v=1781065544","url":"https:\/\/voomisupply.com\/products\/southwark-metal-51f_4x10x5-flanged-ceiling-boot-4x10-to-5in","provider":"Voomi Supply","version":"1.0","type":"link"}