{"product_id":"top-notch-ceiling-radiation-damper-fits-12-by-12-i","title":"Top Notch Ceiling Radiation Damper Fits 12 By 12 Inch Ductwork Galvanized Steel Frame Rated For One Two Three Hour Fire Codes Built Tough UL Certified For Reliable Airflow Management","description":"\u003cdiv\u003e\n\u003cp\u003eFire Rated Ceiling Radiation Damper for Standard 12x12 Ducts\u003cbr\u003e✔️ 12 1\/2 inch square frame fits standard ducts and passes codes\u003c\/p\u003e \u003cp\u003eThis handy thermal safety device stops smoke and extreme heat from traveling through your ventilation paths during an emergency. Building owners install it inside ceiling plenums and above drop tiles to protect stairs and hallways. The assembly connects directly to standard motor operators and locks into place without complex welding. Regular operation keeps indoor air moving while automatic shut off features activate the moment temperatures spike.\u003c\/p\u003e \u003cp\u003e✅ 12 inch opening fits most residential and light commercial duct layouts\u003cbr\u003e✅ Internal shutter trips at 212 degrees Fahrenheit to seal passages\u003cbr\u003e✅ Holds up under one two or three hour fire rating requirements\u003cbr\u003e✅ Lightweight 3 5\/8 inch profile drops flush into suspended grids\u003c\/p\u003e \u003cp\u003e💡 How does a ceiling radiation damper improve smoke management in commercial HVAC systems?\u003cbr\u003eThe whole setup relies on a calibrated thermal blade to restrict dangerous exhaust routes.\u003cbr\u003e- Coiled springs keep vents wide open until ambient heat melts the little alloy pin\u003cbr\u003e- Heavy gauge galvanized shielding fights off rust so the hinge swings smooth for decades\u003cbr\u003e- Quick snap actuators line up right with L100 motor shafts for same day installs\u003cbr\u003e- Building inspectors always appreciate those stamped UL ratings during routine walkthroughs\u003c\/p\u003e\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49306273743083,"sku":"VXB00155Y2WG","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61OlZRQI6eL.jpg?v=1787867107","url":"https:\/\/vxb.com\/products\/top-notch-ceiling-radiation-damper-fits-12-by-12-i","provider":"VXB Bearings","version":"1.0","type":"link"}