{"product_id":"lloyd-industries-75ah-dy_12x12-dynamic-fire-damper-12x12","title":"Lloyd Industries 75AH-DY_12X12 Dynamic Fire Damper 12x12","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LLOYD INDUSTRIES 75AH-DY_12X12 is a dynamic fire damper built for HVAC systems where supply fans remain running during a fire event. Constructed from 20-gauge galvanized steel, this damper uses spring operation to achieve horizontal blade closure under active airflow conditions. It carries a UL 555 label attesting to its tested airflow rating and maximum static pressure limits under both UL Canada and UL US standards. Licensed HVAC technicians and sheet metal contractors install this unit in duct systems requiring dynamic-rated fire protection at rated wall or floor assemblies.\u003c\/p\u003e\n\u003cp\u003eThis damper is intended for residential and commercial HVAC duct installations where dynamic fire dampers are required by code. It is suited for applications in horizontal or vertical orientations, making it adaptable to a range of duct routing configurations. The 12-inch by 12-inch frame size fits standard square duct openings in fire-rated construction assemblies. It is specified where the mechanical system design calls for fans-on fire damper performance per NFPA 90A or local building code requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDynamic-rated closure: operates under active airflow with fans running during fire conditions\u003c\/li\u003e\n  \u003cli\u003eSpring-operated blade mechanism for reliable closure without external power\u003c\/li\u003e\n  \u003cli\u003eGalvanized steel construction for corrosion resistance in duct environments\u003c\/li\u003e\n  \u003cli\u003eInstalls in horizontal or vertical duct orientations\u003c\/li\u003e\n  \u003cli\u003eUL 555 listed under both UL Canada and UL US for fire damper certification\u003c\/li\u003e\n  \u003cli\u003eUL label attests to airflow capacity and maximum static pressure ratings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation dynamic fire damper for 12-inch by 12-inch square duct openings in fire-rated wall and floor assemblies within commercial and residential HVAC systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a licensed HVAC technician or sheet metal contractor in accordance with NFPA 90A, the International Mechanical Code, and local authority having jurisdiction requirements. Power down the HVAC system and confirm zero airflow before positioning and securing the damper sleeve in the rated assembly opening. Access panels must be provided per code to allow inspection and resetting of the damper blade after any actuation. Do not restrict the blade travel path or alter the spring mechanism after installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamper Type\u003c\/strong\u003e: Dynamic Fire Damper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Size\u003c\/strong\u003e: 12 inches x 12 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Material Gauge\u003c\/strong\u003e: 20 gauge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Material\u003c\/strong\u003e: Galvanized Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Material Thickness\u003c\/strong\u003e: 22 gauge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrientation\u003c\/strong\u003e: Horizontal and Vertical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuation\u003c\/strong\u003e: Spring operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplicable Standard\u003c\/strong\u003e: UL 555 (UL Canada and US)\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: LLOYD INDUSTRIES\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 75AH-DY_12X12\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LLOYD INDUSTRIES","offers":[{"title":"Default Title","offer_id":51283908034866,"sku":"75AH-DY_12X12","price":40.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309278043.jpg?v=1781062981","url":"https:\/\/voomisupply.com\/products\/lloyd-industries-75ah-dy_12x12-dynamic-fire-damper-12x12","provider":"Voomi Supply","version":"1.0","type":"link"}