:root { --hvx-golden: #0EA5A6; --hvx-slate: #0F172A; --hvx-ivory: #F8FAFC; --hvx-border: #D6DEE8; --hvx-card-bg: #FFFFFF; } .hvx-desc{ font-family:"Articulat CF",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; color:var(--hvx-slate); line-height:1.6; background:var(--hvx-ivory); padding:18px 18px 20px; border-radius:16px; } .hvx-desc-header{ border-radius:14px; padding:14px 16px; background:linear-gradient(120deg,var(--hvx-golden),var(--hvx-slate)); color:#fff; margin:0 0 16px; box-shadow:0 10px 24px rgba(0,0,0,.22); display:flex; align-items:center; gap:12px; flex-wrap:wrap; } .hvx-header-text{display:flex;flex-direction:column;gap:4px;min-width:240px} .hvx-eyebrow{ font-size:11px; letter-spacing:.14em; text-transform:uppercase; opacity:.9; } .hvx-title{ margin:0; font-family:"Anton","Impact",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; font-size:22px; line-height:1.15; } .hvx-sub{margin:10px 0 0;font-size:14px;color:#3b3b3b} .hvx-desc-card{ border:1px solid var(--hvx-border); border-radius:14px; background:var(--hvx-card-bg); padding:16px 18px 18px; box-shadow:0 4px 12px rgba(0,0,0,.06); margin:14px 0; } .hvx-section-title{ margin:0 0 8px; font-family:"Anton","Impact",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; font-size:17px; letter-spacing:.08em; text-transform:uppercase; color:var(--hvx-slate); display:inline-flex; align-items:center; gap:8px; } .hvx-section-title::after{ content:""; flex:1; height:2px; border-radius:999px; background:linear-gradient(90deg,var(--hvx-golden),transparent); opacity:.9; } .hvx-badges{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 2px} .hvx-badge{ font-size:12px; border:1px solid var(--hvx-border); border-radius:999px; padding:6px 10px; background:#fff; color:var(--hvx-slate); white-space:nowrap; } .hvx-cta{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 0} .hvx-cta a{ display:inline-flex; align-items:center; gap:8px; padding:10px 14px; border-radius:12px; border:1px solid var(--hvx-border); background:#fff; text-decoration:none; color:var(--hvx-slate); font-size:14px; font-weight:600; } .hvx-cta a.primary{ background:var(--hvx-slate); color:#fff; border-color:transparent; } .hvx-list{margin:6px 0 10px;padding-left:18px;font-size:14px} .hvx-note{margin:8px 0 0;font-size:12px;color:var(--hvx-muted)} .hvx-table-wrap{width:100%;overflow-x:auto} .hvx-table{width:100%;border-collapse:collapse;font-size:13px;min-width:520px} .hvx-th,.hvx-td{border:1px solid var(--hvx-border);padding:9px 11px;text-align:left;vertical-align:top;line-height:1.45} .hvx-th{background:#f7f3e8;color:var(--hvx-slate);width:30ch;font-weight:700} details{border:1px solid var(--hvx-border);border-radius:12px;padding:12px 14px;background:#fff} summary{cursor:pointer;font-weight:800} @media(max-width:768px){ .hvx-desc{padding:14px 12px 16px;border-radius:12px} .hvx-desc-header{padding:12px;border-radius:12px} .hvx-title{font-size:19px} .hvx-desc-card{padding:14px;margin:10px 0} } MRCOOL — Line Set Fittings MRCOOL DIY Line Set Coupler Kit 3/8" + 5/8" (Two Sets) w/ 75 ft Communication Wire — DIYCOUPLER-3858K75C Ask about compatibility / install questions Call 737-738-6329 Overview 3/8" + 5/8" Couplers Two Sets 75 ft Communication Wire Coupler (Accessory) Copper Finish Prop 65 The MRCOOL® DIYCOUPLER-3858K75C is a line set coupler kit intended to join compatible line set connections using 3/8" and 5/8" couplers. It also includes 75 ft of communication wire for supported installations. Use the included installation instructions to confirm proper fitment and procedure for your specific MRCOOL system. Highlights Kit contents: DIYCOUPLER-38 + DIYCOUPLER-58 (two sets) plus 75 ft communication wire. Sizes: 3/8" liquid-side coupler and 5/8" suction-side coupler. Category: Line set fitting / coupler accessory. Shipping info: Freight class 77.5 listed. Compliance: Proposition 65 warning applies. What’s Included 3/8" coupler: DIYCOUPLER-38 (two sets) 5/8" coupler: DIYCOUPLER-58 (two sets) 75 ft communication wire Specifications Brand MRCOOL Series Line Set Fittings Model DIYCOUPLER-3858K75 Equipment Type Coupler Color Copper (Color family: Bronze/Copper Metallic) UPC 810035933286 GTIN 00810035933286 Warranty Registered warranty: N/A Restricted States/Territories GU; PR; VI Freight Class 77.5 Dimensions & Weight Net Weight 10.80 lb Gross (Box) 11.00" W × 22.50" D × 4.50" H • 12 lb Documents & Downloads Install Manual Important Compatibility: Confirm line size and system compatibility before ordering (3/8" + 5/8"). Prop 65: This product includes a Proposition 65 warning. Install guidance: Follow the installation manual for correct procedure and any required tools. FAQs What exactly comes in this coupler kit? It includes DIYCOUPLER-38 and DIYCOUPLER-58 (two sets) plus 75 ft of communication wire. What line sizes are these couplers for? 3/8" (liquid line) and 5/8" (suction line). What is the 75 ft communication wire used for? It’s used for supported system communication/control wiring in installations that require it. Confirm exact wiring needs in your system’s manual. Will this work with my MRCOOL DIY system? It’s intended for compatible MRCOOL line set applications using 3/8" + 5/8" connections. Verify model compatibility and procedure in the installation manual before purchase. Do I need special tools or refrigerant handling to use couplers? Follow the installation manual. If your installation involves opening a refrigerant circuit or you’re unsure about the procedure, use a licensed HVAC professional.
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