{"product_id":"4-double-wall-tee","title":"4 DOUBLE WALL TEE","description":"\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"f13ec8ec-bbca-4f3c-9225-15b0b7479961\" data-turn-id-container=\"f13ec8ec-bbca-4f3c-9225-15b0b7479961\" data-testid=\"conversation-turn-149\" data-scroll-anchor=\"false\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:b59f6ed6-1cf2-4e0a-bcbb-49d916713c87-75\" data-turn-id-container=\"request-WEB:b59f6ed6-1cf2-4e0a-bcbb-49d916713c87-75\" data-testid=\"conversation-turn-150\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"565763dd-da7e-4de3-9955-bf5bc8b03e60\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"188\"\u003e\u003cstrong data-start=\"0\" data-end=\"22\"\u003e4\" DOUBLE WALL TEE\u003c\/strong\u003e is a \u003cstrong data-start=\"28\" data-end=\"187\"\u003e4-inch double-wall duct\/vent tee fitting used to branch or combine airflow in venting systems while maintaining insulation or heat separation between walls\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"190\" data-end=\"193\"\u003e\n\u003ch2 data-section-id=\"mipyxe\" data-start=\"195\" data-end=\"211\"\u003e🔧 What it is\u003c\/h2\u003e\n\u003cul data-start=\"212\" data-end=\"406\"\u003e\n\u003cli data-section-id=\"1t5tuy7\" data-start=\"212\" data-end=\"230\"\u003eSize: \u003cstrong data-start=\"220\" data-end=\"230\"\u003e4 inch\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8mn95p\" data-start=\"231\" data-end=\"265\"\u003eType: \u003cstrong data-start=\"239\" data-end=\"265\"\u003eTee fitting (T-branch)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jeacqq\" data-start=\"266\" data-end=\"326\"\u003eConstruction: \u003cstrong data-start=\"282\" data-end=\"326\"\u003eDouble-wall (inner liner + outer jacket)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19fwtf5\" data-start=\"327\" data-end=\"406\"\u003eMaterial: typically \u003cstrong data-start=\"349\" data-end=\"406\"\u003egalvanized steel or aluminum insulated ducting system\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"408\" data-end=\"411\"\u003e\n\u003ch2 data-section-id=\"mzz3kp\" data-start=\"413\" data-end=\"431\"\u003e⚙️ What it does\u003c\/h2\u003e\n\u003cul data-start=\"432\" data-end=\"596\"\u003e\n\u003cli data-section-id=\"1lxi6ql\" data-start=\"432\" data-end=\"484\"\u003eSplits or combines airflow in a \u003cstrong data-start=\"466\" data-end=\"484\"\u003e4\" duct system\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1f5afjv\" data-start=\"485\" data-end=\"529\"\u003eMaintains a \u003cstrong data-start=\"499\" data-end=\"529\"\u003esealed, insulated air path\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1y15msr\" data-start=\"530\" data-end=\"596\"\u003eReduces:\n\u003cul data-start=\"543\" data-end=\"596\"\u003e\n\u003cli data-section-id=\"j5xu2b\" data-start=\"543\" data-end=\"556\"\u003eHeat loss\u003c\/li\u003e\n\u003cli data-section-id=\"ki2lvv\" data-start=\"559\" data-end=\"575\"\u003eCondensation\u003c\/li\u003e\n\u003cli data-section-id=\"1vx1665\" data-start=\"578\" data-end=\"596\"\u003eNoise transfer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"598\" data-end=\"635\"\u003e\u003cspan class=\"inline-block align-middle\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-mathml\"\u003e\u003cmath xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"\u003e\u003csemantics\u003e\u003cmrow\u003e\u003cmi\u003eQ\u003c\/mi\u003e\u003cmo\u003e=\u003c\/mo\u003e\u003cmi\u003eA\u003c\/mi\u003e\u003cmo\u003e⋅\u003c\/mo\u003e\u003cmi\u003ev\u003c\/mi\u003e\u003c\/mrow\u003e\u003cannotation encoding=\"application\/x-tex\"\u003eQ = A \\cdot v\u003c\/annotation\u003e\u003c\/semantics\u003e\u003c\/math\u003e\u003c\/span\u003e\u003cspan class=\"katex-html\" aria-hidden=\"true\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eQ\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mrel\"\u003e=\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eA\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mbin\"\u003e⋅\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003ev\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"637\" data-end=\"640\"\u003e\n\u003ch2 data-section-id=\"173plne\" data-start=\"642\" data-end=\"660\"\u003e🧱 Key features\u003c\/h2\u003e\n\u003cul data-start=\"661\" data-end=\"953\"\u003e\n\u003cli data-section-id=\"1d6qsxj\" data-start=\"661\" data-end=\"728\"\u003e\u003cstrong data-start=\"663\" data-end=\"728\"\u003eInner duct + outer protective wall (double-wall construction)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1617omb\" data-start=\"729\" data-end=\"782\"\u003eHelps maintain temperature of moving air or exhaust\u003c\/li\u003e\n\u003cli data-section-id=\"1l3oksi\" data-start=\"783\" data-end=\"833\"\u003eProvides structural rigidity vs single-wall duct\u003c\/li\u003e\n\u003cli data-section-id=\"fg1kb8\" data-start=\"834\" data-end=\"888\"\u003eSlip-fit or gasketed connections depending on system\u003c\/li\u003e\n\u003cli data-section-id=\"vuaw9d\" data-start=\"889\" data-end=\"953\"\u003eOften used with HVAC or vent pipe systems requiring insulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"955\" data-end=\"958\"\u003e\n\u003ch2 data-section-id=\"rh5jo2\" data-start=\"960\" data-end=\"987\"\u003e🏗️ Typical applications\u003c\/h2\u003e\n\u003cul data-start=\"988\" data-end=\"1174\"\u003e\n\u003cli data-section-id=\"17czzs5\" data-start=\"988\" data-end=\"1013\"\u003eHVAC ductwork systems\u003c\/li\u003e\n\u003cli data-section-id=\"aec2ub\" data-start=\"1014\" data-end=\"1048\"\u003eCommercial exhaust ventilation\u003c\/li\u003e\n\u003cli data-section-id=\"12iwryj\" data-start=\"1049\" data-end=\"1096\"\u003eDryer or appliance venting (insulated runs)\u003c\/li\u003e\n\u003cli data-section-id=\"qb60bg\" data-start=\"1097\" data-end=\"1133\"\u003eMechanical room air distribution\u003c\/li\u003e\n\u003cli data-section-id=\"1lbc67y\" data-start=\"1134\" data-end=\"1174\"\u003eIndustrial exhaust or intake systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"AMERICAN METAL PRODUCTS CORP","offers":[{"title":"Default Title","offer_id":52410834026785,"sku":"4ET","price":53.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1905\/1041\/files\/download_1_09271000-671c-4e7a-80f7-8184b2c88104.webp?v=1778618845","url":"https:\/\/standardvmi.com\/products\/4-double-wall-tee","provider":"Standard Plumbing Supply","version":"1.0","type":"link"}