{"product_id":"mrcool-5th-gen-50ft-1-4-x-3-8-lineset-for-diy-6k-9k-12k-indoor-w-diy-pro-cable-r454b-diy50-1438c-o","title":"MRCOOL 5th Gen 50ft 1\/4 x 3\/8 Lineset for DIY 6K, 9K \u0026 12K Indoor w\/ DIY Pro Cable - R454B, DIY50-1438C-O","description":"\u003cstyle\u003e\n    .iron-theme{\n      --black:#0b0b0b; --gray:#6b7280;\n      --red:#c1121f; --red2:#e11d2e;\n      --border:#e5e7eb; --soft:#f8fafc;\n      font-family: Arial, Helvetica, sans-serif;\n      color: var(--black);\n      max-width: 1100px;\n      margin: 0 auto;\n      line-height: 1.7;\n    }\n    .shell{border:1px solid var(--border);border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 10px 28px rgba(0,0,0,.08);}\n    .top{padding:24px;}\n    .kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray);margin:0 0 8px;}\n    h1{margin:0;font-size:30px;font-weight:900;text-transform:uppercase;}\n    .sub{margin:12px 0 0;font-size:15px;max-width:100ch;}\n    .stripe{height:8px;background:linear-gradient(90deg,var(--red) 0%,var(--red) 70%,var(--red2) 100%);}\n    .content{padding:24px;background:var(--soft);}\n    .card{border:1px solid var(--border);border-radius:16px;background:#fff;padding:20px;margin:18px 0;box-shadow:0 8px 22px rgba(0,0,0,.06);}\n    h2{margin:0 0 12px;font-size:19px;font-weight:900;text-transform:uppercase;display:flex;align-items:center;gap:10px;}\n    h2:before{content:\"\";width:10px;height:10px;background:var(--red);border-radius:2px;}\n    ul{margin:0;padding-left:20px;}\n    ul li{margin:8px 0;}\n    table{width:100%;border-collapse:collapse;font-size:14px;}\n    th, td{border:1px solid var(--border);padding:10px;text-align:left;}\n    th{background:#f3f4f6;font-size:12px;text-transform:uppercase;font-weight:900;}\n    .callout{border:1px dashed rgba(193,18,31,.5);background:rgba(193,18,31,.06);border-radius:12px;padding:14px;font-size:14px;margin-top:12px;}\n  \u003c\/style\u003e\n\n\u003csection aria-label=\"MRCOOL 5th Gen 50ft 1\/4 x 3\/8 Lineset for DIY 6K, 9K \u0026amp; 12K Product Description\" class=\"cy3c-wrap iron-theme\"\u003e\n  \u003cdiv class=\"shell\"\u003e\n    \n    \u003cdiv class=\"top\"\u003e\n      \u003cp class=\"kicker\"\u003eExtended 50ft Reach • Pre-Charged R454B • DIYPRO™ Cable Included\u003c\/p\u003e\n      \u003ch2\u003eMRCOOL 5th Gen 50ft 1\/4\" x 3\/8\" Lineset for DIY 6K, 9K \u0026amp; 12K Indoor Units DIY50-1438C-O\u003c\/h2\u003e\n      \u003cp class=\"sub\"\u003eMaximize your installation flexibility with the \u003cstrong\u003eMRCOOL 5th Gen 50ft Pre-Charged Lineset (DIY50-1438C-O)\u003c\/strong\u003e. Specifically engineered for 6,000, 9,000, and 12,000 BTU 5th Generation DIY mini-split air handlers, this 50-foot span allows you to position your outdoor condenser far from your indoor living spaces without compromising performance. Arriving factory-sealed and pre-charged with the next-generation, low-GWP R454B refrigerant, this lineset eliminates the technical requirements for vacuuming and charging. Utilizing MRCOOL's patented Quick Connect fittings, you can achieve a professional-grade, leak-proof seal using only a simple wrench, ensuring a safe and efficient DIY setup.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"stripe\"\u003e\u003cbr\u003e\u003c\/div\u003e\n    \n    \u003cdiv class=\"content\"\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eMRCOOL 5th Gen 50ft 1\/4\" x 3\/8\" Lineset Applications\u003c\/h2\u003e\n        \u003cul\u003e\n          \u003cli\u003eLong-distance residential installations connecting a ground-level condenser to upper-floor rooms.\u003c\/li\u003e\n          \u003cli\u003eConnecting 6K, 9K, or 12K air handlers in detached guesthouses, workshops, or backyard offices.\u003c\/li\u003e\n          \u003cli\u003eComplex routing through attics, basements, or expansive crawlspaces where standard lengths fall short.\u003c\/li\u003e\n          \u003cli\u003eEco-conscious HVAC upgrades requiring the latest R454B refrigerant standard compliance.\u003c\/li\u003e\n        \u003c\/ul\u003e\n        \u003cdiv class=\"callout\"\u003eProvides the exact 1\/4\" liquid and 3\/8\" suction diameters required for optimal refrigerant flow in low-to-medium BTU configurations.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eMRCOOL 5th Gen 50ft 1\/4\" x 3\/8\" Lineset Specifications\u003c\/h2\u003e\n        \u003ctable\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n              \u003cth\u003eSKU\u003c\/th\u003e\n              \u003ctd\u003eDIY50-1438C-O\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eLength\u003c\/th\u003e\n              \u003ctd\u003e50 Feet\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eLiquid Line Size\u003c\/th\u003e\n              \u003ctd\u003e1\/4 Inch\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eSuction Line Size\u003c\/th\u003e\n              \u003ctd\u003e3\/8 Inch\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eCompatibility\u003c\/th\u003e\n              \u003ctd\u003e5th Gen DIY 6K, 9K, \u0026amp; 12K BTU Indoor Handlers\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eRefrigerant Type\u003c\/th\u003e\n              \u003ctd\u003ePre-Charged with R454B\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003cth\u003eIncluded Cable\u003c\/th\u003e\n              \u003ctd\u003eDIYPRO™ Communication Cable\u003c\/td\u003e\n            \u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eAdvanced DIYPRO™ Technology \u0026amp; Protection\u003c\/h2\u003e\n        \u003cp style=\"margin-top:0; font-size:15px;\"\u003eA standout feature of this 5th generation package is the inclusion of the \u003cstrong\u003eDIYPRO™ Cable\u003c\/strong\u003e. This heavily shielded communication wire provides superior mechanical protection against UV rays, extreme temperatures, and pests. By integrating the DIYPRO™ cable, you eliminate the labor-intensive requirement of running traditional electrical conduit between your indoor and outdoor units. This drastically simplifies the installation process, reduces overall project material costs, and provides a clean, professional-looking finished product with maximum long-term durability across the full 50-foot distance.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \n      \u003cdiv class=\"card\"\u003e\n        \u003ch2\u003eWhy Choose the MRCOOL 5th Gen 50ft DIY Lineset\u003c\/h2\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eTrue DIY Installation:\u003c\/strong\u003e Patented Quick Connect fittings create an airtight seal without specialized HVAC tools.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eEco-Friendly \u0026amp; Modern:\u003c\/strong\u003e Pre-charged with R454B, ensuring your system meets the latest environmental and efficiency standards.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eFlexible Positioning:\u003c\/strong\u003e 50 feet of length allows for discreet condenser placement far from main home areas.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eIndustrial Grade Insulation:\u003c\/strong\u003e Robust outer protection prevents condensation and energy loss, ensuring peak operational efficiency.\u003c\/li\u003e\n        \u003c\/ul\u003e\n        \u003cdiv class=\"callout\"\u003eThe MRCOOL 5th Gen 50ft DIY Lineset (DIY50-1438C-O) offers the perfect combination of length, safety, and simplicity—delivering professional-grade performance with a true do-it-yourself experience.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e","brand":"MRCOOL","offers":[{"title":"Default Title","offer_id":53230652817773,"sku":"DIY50-1438C-O","price":587.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6996\/6445\/files\/mc-nov-qc-lset-3D-img-1000px-01_4c08e7da-25d7-4236-8b1d-f419a0f7dd03.webp?v=1776891660","url":"https:\/\/ironlinetools.com\/products\/mrcool-5th-gen-50ft-1-4-x-3-8-lineset-for-diy-6k-9k-12k-indoor-w-diy-pro-cable-r454b-diy50-1438c-o","provider":"Iron Line Tools","version":"1.0","type":"link"}