{"product_id":"southwark-metal-31pf-24ga_4x12-duct-plaster-frame-4x12","title":"Southwark Metal 31PF-24GA_4X12 Duct Plaster Frame 4x12","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SOUTHWARK METAL 31PF-24GA_4X12 is a sheet metal duct plaster frame boot rail designed for return air duct terminations in residential and light commercial HVAC installations. Formed from hot dip galvanized steel at 24 gauge, this plaster frame provides a rigid, corrosion-resistant border that holds the duct boot flush against drywall or plaster surfaces during and after finishing. The 4-inch by 12-inch frame size accommodates standard return air boot openings, giving installers a clean, secure perimeter that prevents wall material from crumbling into the duct opening. HVAC sheet metal mechanics and duct installers rely on this type of component to produce a finished, code-compliant wall termination.\u003c\/p\u003e\n\u003cp\u003eThis plaster frame boot rail is used where return air grilles terminate at finished wall or ceiling surfaces in forced-air HVAC systems. It is installed during the rough-in phase, set in place before drywall compound or plaster is applied, so the frame becomes embedded in the finished surface. The 4-inch by 12-inch opening suits common residential return air layouts. It meets ACCA and SMACNA applicable standards, making it appropriate for installations that require documented compliance with industry duct construction guidelines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHot dip galvanized steel construction resists corrosion in wall cavities and humid environments\u003c\/li\u003e\n  \u003cli\u003e24 gauge material thickness provides rigidity without excessive weight during installation\u003c\/li\u003e\n  \u003cli\u003e4-inch by 12-inch frame size fits standard return air boot openings\u003c\/li\u003e\n  \u003cli\u003eDesigned for return air applications in forced-air HVAC duct systems\u003c\/li\u003e\n  \u003cli\u003eMeets ACCA and SMACNA applicable standards for sheet metal duct construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and new-construction component for standard 4-inch by 12-inch return air boot terminations in residential and light commercial forced-air HVAC duct systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed HVAC mechanics or sheet metal workers during the duct rough-in phase, prior to drywall or plaster finishing. Secure the frame to the framing or boot before wall finishing begins so the flange becomes properly embedded. Verify the duct boot is fully seated and fastened before applying wall compound. Follow SMACNA and ACCA duct construction standards for fastener type and spacing on sheet metal assemblies.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Size\u003c\/strong\u003e: 4 inches x 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Dip Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Thickness\u003c\/strong\u003e: 24 Gauge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Return Air\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: 31PF-24GA_4X12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHWARK METAL","offers":[{"title":"Default Title","offer_id":51284058603826,"sku":"31PF-24GA_4X12","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309276893.jpg?v=1781067421","url":"https:\/\/voomisupply.com\/products\/southwark-metal-31pf-24ga_4x12-duct-plaster-frame-4x12","provider":"Voomi Supply","version":"1.0","type":"link"}