{"product_id":"hayward350knegativepressureindoorventadapteruhxnegvt13508hppuhxnegvt13508","title":"Hayward 350K Negative Pressure Indoor Vent Adapter","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward 350K Negative Pressure Indoor Vent Adapter\u003c\/h1\u003e\n\u003cp\u003eThe Hayward 350K Negative Pressure Indoor Vent Adapter is engineered to enable safe, code-compliant indoor venting for Hayward heaters when negative-pressure exhaust is required. It integrates with Hayward indoor vent kits and uses the standard 8\" top diameter shared by all indoor venting applications. For site planning, refer to the heater’s Table 2, which outlines available indoor venting kits and their limitations, including horizontal and vertical termination options and cost considerations.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eNegative-pressure optimized design:\u003c\/strong\u003e ensures reliable exhaust flow in enclosed spaces, reducing backdraft risk and meeting code requirements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless compatibility with Hayward indoor vent kits:\u003c\/strong\u003e pre-made connections simplify installation and minimize field modification.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e8-inch top diameter compatibility:\u003c\/strong\u003e aligns with the standard indoor vent top used by Hayward heaters for a tight seal.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible termination options:\u003c\/strong\u003e supports horizontal and vertical vent routing to fit room layouts and ceilings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHayward engineering heritage:\u003c\/strong\u003e backed by decades of pool and spa heating expertise for reliable indoor venting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith the 350K adapter, you gain a reliable, installer-friendly path to safe indoor venting that aligns with Hayward’s venting ecosystem. Ideal for retrofit installations or spaces where outdoor venting isn’t feasible. Add the Hayward 350K Negative Pressure Indoor Vent Adapter to your kit today and install with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51681739047229,"sku":"HPPUHXNEGVT13508","price":319.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/3611\/6541\/files\/HPPUHXNEGVT13508_0.jpg?v=1778223472","url":"https:\/\/www.duckiespoolsupply.com\/products\/hayward350knegativepressureindoorventadapteruhxnegvt13508hppuhxnegvt13508","provider":"Duckies Pool Supply","version":"1.0","type":"link"}