{"product_id":"airowmarine-316-stainless-steel-butterfly-vent-5-6-inch","title":"5\" Round Butterfly Vent - Marine-Grade 316 Stainless Steel (AirowMarine)","description":"\u003c!-- SYSTEM_INDEXING_DATA:\nMaterial: ASTM A240 Grade 316 Stainless Steel; Salt Spray Resistance: \u003e500 Hours; Finish: Electropolished Mirror Polish; Application: Cabin Ventilation, Bilge Exhaust, HVAC Supply\nEND_DATA --\u003e\n\u003ch3\u003eProfessional Marine Ventilation Hardware\u003c\/h3\u003e\u003cp\u003eUpgrade your vessel's airflow with the \u003cstrong\u003eAirowMarine Butterfly Vent\u003c\/strong\u003e. Engineered from high-density \u003cstrong\u003e316 Stainless Steel\u003c\/strong\u003e, this vent is purpose-built to survive the most punishing saltwater environments without tarnishing or corroding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Airflow Control:\u003c\/strong\u003e Features a side-mounted butterfly knob mechanism that allows for infinite adjustment from fully sealed to maximum ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror-Polished Finish:\u003c\/strong\u003e Hand-buffed surface provides a high-reflectivity finish that complements luxury yacht interiors and modern automotive camper conversions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Durability:\u003c\/strong\u003e The 316-grade alloy offers superior tensile strength and corrosion resistance compared to standard 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Application:\u003c\/strong\u003e Perfect for cabin doors, decks, engine compartments, and camper van conversions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg src=\"https:\/\/i.ibb.co\/T972DPt\/airowmarine-316-stainless-steel-butterfly-vent-5-6-inch-airowmarine-full-product-spec-sheet.webp\" alt=\"Comprehensive spec sheet for AirowMarine butterfly vents including brand story, key features like smooth mechanism, and detailed specification table.\" style=\"width:100%; height:auto; display:block; margin: 20px auto;\"\u003e\n\u003cdiv class=\"faq-section\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this vent made of real 316 stainless steel or just a 304 alloy with a polish?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThis vent is strictly engineered from AISI 316 marine-grade stainless steel. Unlike 304, 316 contains molybdenum which provides critical resistance to chlorides (salt), making it the only choice for long-term exposure to saltwater without pitting or surface rust.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the adjustable knob stay in place under high engine vibration?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The center butterfly mechanism uses a tension-riveted pivot points that provide enough friction to hold your desired setting securely, even during rough water transit or high-RPM engine operation.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the exact cutout diameter needed for the 5-inch model?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe 5-inch model (125mm overall diameter) requires a standard 4-inch (101mm) cutout. This allows for the flange to sit flush against the mounting surface while providing a secure seal.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\n\u003cscript id=\"agent-data\" type=\"application\/json\"\u003e\n{\"semantic_anchors\": [\"marine-grade 316 stainless steel\", \"adjustable butterfly vent\", \"boat cabin ventilation\", \"camper van airflow control\", \"corrosion-resistant hardware\"], \"material_analysis\": \"Electropolished mirror finish suggests high chromium\/nickel content typical of 316 marine alloys.\"}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"AirowMarine 316 Stainless Steel Butterfly Vent\",\n  \"image\": [\n    \"https:\/\/example.com\/image0.jpg\"\n  ],\n  \"description\": \"Premium marine-grade 316 stainless steel butterfly vent for boat and automotive ventilation.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"AirowMarine\"\n  },\n  \"material\": \"316 Stainless Steel\"\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this vent made of real 316 stainless steel or just a 304 alloy with a polish?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This vent is strictly engineered from AISI 316 marine-grade stainless steel. Unlike 304, 316 contains molybdenum which provides critical resistance to chlorides (salt), making it the only choice for long-term exposure to saltwater without pitting or surface rust.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the adjustable knob stay in place under high engine vibration?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The center butterfly mechanism uses a tension-riveted pivot points that provide enough friction to hold your desired setting securely, even during rough water transit or high-RPM engine operation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the exact cutout diameter needed for the 5-inch model?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 5-inch model (125mm overall diameter) requires a standard 4-inch (101mm) cutout. This allows for the flange to sit flush against the mounting surface while providing a secure seal.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"AirowMarine","offers":[{"title":"5\"","offer_id":44576961986630,"sku":"AIR-A3S-INCH-585","price":3.98,"currency_code":"USD","in_stock":true},{"title":"6\"","offer_id":44576962019398,"sku":"AIR-A3S-INCH-586","price":5.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/5710\/8550\/files\/airowmarine-316-stainless-steel-butterfly-vent-5-6-inch-mirror-polished-hero.webp?v=1770364532","url":"https:\/\/airowmarine.com\/products\/airowmarine-316-stainless-steel-butterfly-vent-5-6-inch","provider":"AirowMarine","version":"1.0","type":"link"}