{"product_id":"ext1277481-fantech-rsk4-4-inch-duct-backdraft-damper-1-pack","title":"Open-Box: Fantech RSK4 4-Inch Duct Backdraft Damper - 1-Pack","description":"\u003cp\u003eBackdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. This Fantech RSK4 4-Inch Duct Backdraft Damper for circular ducts is manufactured from galvanized sheet metal. Every Fantech Backdraft Damper is built with performance in mind.\u003c\/p\u003e\n\n\u003ch2\u003eAvailable In Single Or Multi-Packs\u003c\/h2\u003e\n\n\u003cp\u003eThe Fantech RSK4 4-Inch Duct Backdraft Damper is available in the following quantities:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSingle RSK 4 Backdraft Damper\u003c\/li\u003e\n\n\u003cli\u003e30 Pack Carton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositioning options:\u003c\/strong\u003e The damper can be mounted vertically.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eDamper blades formed from aluminum H14:\u003c\/strong\u003e Twenty percent stronger than 1100 series aluminum.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e24 GA, G90 galvanized steel casing:\u003c\/strong\u003e Galvanized steel is coated with a thin layer of zinc. The zinc coating protects the steel beneath it from rust.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSpring Loaded Blades:\u003c\/strong\u003e Its two blades are spring-loaded.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCentral Rod:\u003c\/strong\u003e Features a 3\/32\" diameter brass central rod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eSummary\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis Fantech 4-Inch Damper allows airflow in one direction and prevent reverse airflow. Built with performance in mind, Fantech RSK4 is manufactured from galvanized sheet metal.\u003c\/p\u003e","brand":"Fantech","offers":[{"title":"Very Good","offer_id":42359107158102,"sku":"bstock-fn12588V","price":24.99,"currency_code":"USD","in_stock":false},{"title":"Like New","offer_id":42359274635350,"sku":"bstock-fn12588N","price":24.99,"currency_code":"USD","in_stock":false},{"title":"Good","offer_id":42359274668118,"sku":"bstock-fn12588G","price":24.99,"currency_code":"USD","in_stock":false},{"title":"Acceptable","offer_id":42359274700886,"sku":"bstock-fn12588A","price":24.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/7135\/4966\/files\/fantech-rsk4-4-inch-duct-backdraft-damper-side_a759de01-6362-4b9c-a8d2-8bb384e584ad.png?v=1755799302","url":"https:\/\/www.sylvane.com\/products\/ext1277481-fantech-rsk4-4-inch-duct-backdraft-damper-1-pack","provider":"Sylvane","version":"1.0","type":"link"}