{"product_id":"hearthstone-90-53220-heritage-mansfield-outside-air-adapter","title":"Hearthstone 90-53220 Heritage\/Mansfield Outside Air Adapter","description":"\u003ch3 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe HearthStone Outside Air Starter provides a dedicated connection for supplying outside combustion air directly to compatible HearthStone wood stoves. Designed specifically for Mansfield and Heritage models, the adapter connects to the stove’s combustion air inlet and provides a 3-inch connection for outside-air ducting.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eBringing combustion air in from outside can be especially useful in tightly constructed or well-sealed homes where adequate indoor combustion air may be limited. It can also help prevent the stove from drawing already-heated room air for combustion.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis genuine HearthStone accessory is designed for proper fitment with compatible Mansfield and Heritage wood stoves and provides a clean starting point for an outside-air installation.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eFeatures \u0026amp; Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAccessory Type: Outside Air Starter\u003c\/li\u003e\n\u003cli\u003eConnection Diameter: 3\"\u003c\/li\u003e\n\u003cli\u003eProvides outside combustion air connection\u003c\/li\u003e\n\u003cli\u003eDesigned for connection to outside-air ducting\u003c\/li\u003e\n\u003cli\u003eGenuine HearthStone accessory\u003c\/li\u003e\n\u003cli\u003eCompatible with Mansfield and Heritage wood stoves\u003c\/li\u003e\n\u003cli\u003ePart Number: 90-53220\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eCompatible HearthStone Stoves\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHearthStone Mansfield\u003c\/li\u003e\n\u003cli\u003eHearthStone Heritage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eInstallation\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe starter mounts to the stove's outside-air connection and provides a 3-inch attachment point for the outside-air duct. The duct can then be routed to an appropriate exterior air source as part of the stove installation.\u003c\/p\u003e","brand":"Hearthstone","offers":[{"title":"Default Title","offer_id":55643255865643,"sku":"90-53220","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/8956\/3179\/files\/ChatGPT_Image_Sep_18_2026_11_14_20_AM.png?v=1789744471","url":"https:\/\/www.casualfurnitureworld.com\/products\/hearthstone-90-53220-heritage-mansfield-outside-air-adapter","provider":"Casual Furniture World","version":"1.0","type":"link"}