{"product_id":"southwark-metal-91_9x12-sheet-metal-duct-box-9x12-floor","title":"Southwark Metal 91_9X12 Sheet Metal Duct Box 9x12 Floor","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 91_9X12 is a sheet metal duct box designed for floor register applications in residential and light commercial HVAC installations. Built from hot dip galvanized steel, this duct box measures 9 inches by 12 inches with an 11-inch depth, providing the structural clearance needed to transition from the subfloor framing to a floor-mounted supply register. The galvanized construction resists corrosion in the moisture-prone environment beneath floor assemblies. HVAC installers and sheet metal fabricators use this type of duct box to terminate supply air runs at floor level, creating a clean, square opening for a standard floor grille or register to seat against.\u003c\/p\u003e\n\u003cp\u003eThis duct box is suited for forced-air heating and cooling systems where supply registers are located in the floor. Typical installations involve cutting a matching opening in the subfloor, dropping the duct box through, and connecting the open end to the supply duct branch below. The 9-by-12-inch face dimension accommodates a standard floor register of the same nominal size. Meets ACCA and SMACNA standards for sheet metal duct construction, making it appropriate for both new construction and replacement work in residential and light commercial settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction resists corrosion in subfloor environments\u003c\/li\u003e\n  \u003cli\u003e9 inches by 12 inches face size matches standard nominal floor register dimensions\u003c\/li\u003e\n  \u003cli\u003e11-inch depth provides clearance for connection to supply duct branch below the floor\u003c\/li\u003e\n  \u003cli\u003eMeets ACCA and SMACNA applicable standards for sheet metal duct fabrication\u003c\/li\u003e\n  \u003cli\u003eDesigned specifically for floor register termination in forced-air systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-construction duct box for floor register applications accepting a standard 9-inch by 12-inch nominal floor grille or register.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling system and, where applicable, the furnace or air handler before modifying any duct connections. The duct box should be secured to the subfloor framing per SMACNA installation guidelines, and all joints should be sealed with approved duct sealant or tape to prevent air leakage. Do not apply load-bearing weight directly to the duct box face after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dip Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Size (A)\u003c\/strong\u003e: 9 inches x 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace Size (B)\u003c\/strong\u003e: 9 inches x 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 11 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Floor Register Duct Box\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: 91_9X12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51283934085426,"sku":"91_9X12","price":44.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277122.jpg?v=1781063581","url":"https:\/\/voomisupply.com\/products\/southwark-metal-91_9x12-sheet-metal-duct-box-9x12-floor","provider":"Voomi Supply","version":"1.0","type":"link"}