{"product_id":"check-valve-for-ventilation-systems","title":"Non-Return Valve for Ventilation Systems","description":"\u003cp style=\"text-align: justify;\"\u003eThe backdraft damper is an automatic mechanism designed to connect 2 air ducts when building ventilation systems. The damper is fitted with metal flaps that open when there is airflow in one direction and close when air is drawn back. When there is no airflow, the flaps remain closed with the help of a spring.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\u003cstrong\u003eDesigned to connect 2 separate air ducts\u003c\/strong\u003e\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePrevents treated air from flowing back into the room\u003c\/strong\u003e \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Vents","offers":[{"title":"⌀ 125 mm","offer_id":55115768987990,"sku":"3577","price":70.0,"currency_code":"RON","in_stock":true},{"title":"⌀ 150 mm","offer_id":55115769020758,"sku":"3578","price":77.0,"currency_code":"RON","in_stock":true},{"title":"⌀ 200 mm","offer_id":55115769053526,"sku":"3579","price":95.0,"currency_code":"RON","in_stock":true},{"title":"⌀ 250 mm","offer_id":55115769086294,"sku":"3580","price":112.0,"currency_code":"RON","in_stock":true},{"title":"⌀ 315 mm","offer_id":55115769119062,"sku":"3581","price":148.0,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1055\/7190\/9974\/files\/vazvratna-klapa-za-ventilatsionni-sistemi.webp?v=1787849796","url":"https:\/\/urbanbotaniks.ro\/en\/products\/check-valve-for-ventilation-systems","provider":"UrbanBotaniks Grow Shop","version":"1.0","type":"link"}