{"product_id":"ac-infinity-backdraft-damper-4-inch-galvanized-steel","title":"AC Infinity Backdraft Damper 4 Inch Galvanized Steel for Ducting","description":"\u003cp data-start=\"397\" data-end=\"967\"\u003eThis 4-inch backdraft damper is designed to prevent cold air, odors, and debris from flowing backward through ducting in HVAC and ventilation systems. Its galvanized steel body provides durability while the spring-loaded aluminum blades open easily with minimal airflow. Dual outer rubber gaskets create a secure airtight seal, allowing the damper to mount horizontally or vertically without additional fasteners. Ideal for kitchen range hoods, bathroom fans, dryers, and grow room ventilation, this insert improves system efficiency and airflow direction.\u003c\/p\u003e\n\u003cp data-start=\"969\" data-end=\"1270\"\u003eKey features\u003cbr data-start=\"981\" data-end=\"984\"\u003e• Prevents backdrafts and debris from entering 4-inch ducts\u003cbr data-start=\"1043\" data-end=\"1046\"\u003e• Outer rubber gaskets form a tight, secure airtight seal\u003cbr data-start=\"1103\" data-end=\"1106\"\u003e• Spring-loaded aluminum blades open with minimal airflow\u003cbr data-start=\"1163\" data-end=\"1166\"\u003e• Galvanized steel body with powder-coated finish\u003cbr data-start=\"1215\" data-end=\"1218\"\u003e• Mounts horizontally or vertically inside ducting\u003c\/p\u003e\n\u003cp data-start=\"1272\" data-end=\"1519\"\u003eApplications\u003cbr data-start=\"1284\" data-end=\"1287\"\u003e• Range hoods and kitchen ventilation\u003cbr data-start=\"1324\" data-end=\"1327\"\u003e• Bathroom exhaust fans and dryer vents\u003cbr data-start=\"1366\" data-end=\"1369\"\u003e• HVAC systems for heating and cooling\u003cbr data-start=\"1407\" data-end=\"1410\"\u003e• Grow room ducting and inline fan protection\u003cbr data-start=\"1455\" data-end=\"1458\"\u003e• Water heater draft protection and one-way airflow control\u003c\/p\u003e\n\u003cp data-start=\"1521\" data-end=\"1818\"\u003eProduct specifications\u003cbr data-start=\"1543\" data-end=\"1546\"\u003eManufacturer: AC Infinity Inc.\u003cbr data-start=\"1576\" data-end=\"1579\"\u003eProduct Name: Backdraft Damper, 4\"\u003cbr data-start=\"1613\" data-end=\"1616\"\u003eProduct Model: AC-BDD4-B\u003cbr data-start=\"1640\" data-end=\"1643\"\u003eUPC Code: 819137021303\u003cbr data-start=\"1665\" data-end=\"1668\"\u003eDuct Opening Size: 4 in\u003cbr data-start=\"1691\" data-end=\"1694\"\u003eProduct Length: 5.03 in (12.8 cm)\u003cbr data-start=\"1727\" data-end=\"1730\"\u003eBody Material: Steel\u003cbr data-start=\"1750\" data-end=\"1753\"\u003eShutter Material: Aluminum\u003cbr data-start=\"1779\" data-end=\"1782\"\u003eColor: Black\u003cbr data-start=\"1794\" data-end=\"1797\"\u003eFinish: Powder coat\u003c\/p\u003e\n\u003cp data-start=\"1820\" data-end=\"1861\"\u003eWhat’s included\u003cbr data-start=\"1835\" data-end=\"1838\"\u003e• Backdraft damper 4\"\u003c\/p\u003e","brand":"AC Infinity","offers":[{"title":"Default Title","offer_id":42782379835459,"sku":null,"price":17.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2082\/5769\/files\/StorePhoto1__81287.1580777519.jpg?v=1765084838","url":"https:\/\/happyhydro.com\/products\/ac-infinity-backdraft-damper-4-inch-galvanized-steel","provider":"Happy Hydro","version":"1.0","type":"link"}