{"product_id":"hayward400knegativepressureindoorventadapteruhxnegvt14008hppuhxnegvt14008","title":"Hayward 400K Negative Pressure Indoor Vent Adapter | UHXNEGVT14008","description":"\u003cdiv\u003e\n  \u003ch2\u003eHayward UHXNEGVT14008 Negative Pressure Vertical Indoor Vent Adapter Kit, 8\" (H400FD)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Hayward \u003cstrong\u003eUHXNEGVT14008\u003c\/strong\u003e is a genuine \u003cstrong\u003enegative-pressure vertical indoor vent adapter kit\u003c\/strong\u003e\n    designed for \u003cstrong\u003eHayward Universal H-Series H400FD (FDN\/FDP) Low NOx heaters\u003c\/strong\u003e. It provides the proper\n    \u003cstrong\u003e8\" vent connection\u003c\/strong\u003e required for approved indoor (and certain covered outdoor) vertical venting installations\n    when the site requires negative-pressure venting configuration.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: UHXNEGVT14008\u003c\/li\u003e\n    \u003cli\u003eBrand: Hayward\u003c\/li\u003e\n    \u003cli\u003eType: Negative pressure vertical indoor vent adapter kit\u003c\/li\u003e\n    \u003cli\u003eVent Size: 8\" diameter adapter\u003c\/li\u003e\n    \u003cli\u003eHeater Compatibility: Hayward Universal H-Series \u003cstrong\u003eH400FD\u003c\/strong\u003e models (commonly listed for \u003cstrong\u003eH400FDN\u003c\/strong\u003e and \u003cstrong\u003eH400FDP\u003c\/strong\u003e)\u003c\/li\u003e\n    \u003cli\u003eUse Case: Indoor vertical venting (and certain covered outdoor venting situations when allowed by installation instructions)\u003c\/li\u003e\n    \u003cli\u003eGenuine Hayward replacement kit for correct fit and code-compliant installation (when installed per Hayward instructions)\u003c\/li\u003e\n    \u003cli\u003eCommon note: listed as replacing older kit \u003cstrong\u003eUHXNEGVT14001\u003c\/strong\u003e in many references\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eApplications\u003c\/h3\u003e\n  \u003cp\u003e\n    Used for approved venting configurations on compatible Hayward H400FD heaters where an \u003cstrong\u003e8\" negative-pressure vertical vent adapter\u003c\/strong\u003e\n    is required. Often used in commercial or in-ground installations that need a specific indoor venting setup.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the exact heater model (H400FDN\/H400FDP) and the required venting type before ordering.\u003c\/li\u003e\n    \u003cli\u003eVenting must follow Hayward installation instructions and local code requirements.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is strongly recommended for gas heater venting components.\u003c\/li\u003e\n    \u003cli\u003eInspect the venting path, clearances, and termination requirements during installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=UHXNEGVT14008\"\u003eHayward UHXNEGVT14008\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20H400FD%20parts\"\u003eHayward H400FD Heater Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20universal%20h%20heater%20vent%20kit\"\u003eHayward Universal H Heater Vent Kits\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20gasket\"\u003eHayward Heater Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20ignitor\"\u003eHayward Heater Ignition Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect vent connections and supports periodically for looseness, corrosion, or signs of leakage.\u003c\/li\u003e\n    \u003cli\u003eKeep the heater area clear and maintain required clearances for safe combustion air and service access.\u003c\/li\u003e\n    \u003cli\u003eIf the heater shows vent\/pressure fault codes, verify venting configuration and restrictions before replacing parts.\u003c\/li\u003e\n    \u003cli\u003eHave venting inspected during annual heater service, especially on indoor installations.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797885604015,"sku":"UHXNEGVT14008","price":213.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-400k-negative-pressure-indoor-vent-adapter-uhxnegvt14008-heater-parts-9046335.jpg?v=1777068753","url":"https:\/\/freshized.com\/products\/hayward400knegativepressureindoorventadapteruhxnegvt14008hppuhxnegvt14008","provider":"Freshized","version":"1.0","type":"link"}