{"product_id":"duravent-3-to-4-pelletvent-pro-increaser","title":"DuraVent 3\" to 4\" PelletVent Pro Increaser — Black","description":"\u003cp\u003e\u003cstrong\u003eStep up from 3\" to 4\" vent — required for long runs and high elevations.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DuraVent 3\"-to-4\" black increaser lets you upsize to 4\" PelletVent Pro, which ComfortBilt recommends when flue height exceeds 12 ft, at elevations above 5,000 ft, or when your layout exceeds the 3\" EVL limit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from StoveSource:\u003c\/strong\u003e Authorized dealer · Free shipping over $250 · No sales tax (except WY) · 1-888-914-0022\u003c\/p\u003e","brand":"DuraVent","offers":[{"title":"Default Title","offer_id":50742830170364,"sku":"3PVP-X4ADB","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/9944\/0892\/files\/download_4ed8cac0-d610-4fbf-94c2-9fffe7cf4ca5.jpg?v=1785463781","url":"https:\/\/stovesource.com\/products\/duravent-3-to-4-pelletvent-pro-increaser","provider":"StoveSource","version":"1.0","type":"link"}