{"product_id":"huum-core-bk-st-sauna-heater-with-uku-local-controller-and-stones-sak80312","title":"CORE BK\/ST | Sauna Heater With UKU Controller + Stones | By Huum","description":"\u003cstyle\u003e\n.fw-wrap{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,sans-serif;max-width:820px;margin:0 auto;padding:1.5rem 0;color:#ffffff}\n.fw-sku{font-size:15px;letter-spacing:.04em;text-transform:uppercase;color:#c8a254 !important;margin:0 0 14px;font-weight:800;line-height:1.5}\n.fw-intro{font-size:14px;line-height:1.85;color:#b0b8cc;margin:0 0 12px}\n.fw-ritual{font-size:14px;color:#c8a254;font-style:italic;padding:10px 0 10px 14px;border-left:3px solid #c8a254;margin:0 0 1.5rem;background:rgba(200,162,84,.06);border-radius:0 6px 6px 0}\n.fw-badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:1.5rem}\n.fw-badge{font-size:11px;padding:4px 12px;border-radius:20px;border:1px solid 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18px;cursor:pointer;gap:12px;background:transparent;border:none;width:100%;text-align:left}\n.fw-acc-header:hover{background:rgba(200,162,84,.06)}\n.fw-acc-title{font-size:13px;font-weight:600;color:#ffffff;text-transform:uppercase;letter-spacing:.05em;display:flex;align-items:center;gap:10px}\n.fw-acc-icon{font-size:15px;flex-shrink:0}\n.fw-acc-chevron{color:#c8a254;font-size:11px;transition:transform .25s ease;flex-shrink:0;font-weight:700;display:inline-block}\n.fw-acc-chevron.open{transform:rotate(180deg)}\n.fw-acc-body{display:none;padding:4px 18px 18px;border-top:1px solid rgba(255,255,255,.07)}\n.fw-acc-body.open{display:block}\n.fw-body-intro{font-size:13px;color:#8892a8;line-height:1.7;margin:14px 0 8px}\n.fw-feature-row{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.06);align-items:flex-start}\n.fw-feature-row:last-child{border-bottom:none}\n.fw-feature-emoji{font-size:15px;flex-shrink:0;width:20px;padding-top:1px}\n.fw-feature-text{font-size:13px;color:#b0b8cc;line-height:1.7}\n.fw-feature-text strong{color:#ffffff;font-weight:600}\n.fw-spec-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:14px}\n.fw-spec-table tr{border-bottom:1px solid rgba(255,255,255,.06)}\n.fw-spec-table tr:last-child{border-bottom:none}\n.fw-spec-table td{padding:9px 4px;vertical-align:top}\n.fw-spec-table td:first-child{color:#8892a8;width:46%;text-transform:uppercase;font-size:11px;letter-spacing:.04em;font-weight:500;padding-top:11px}\n.fw-spec-table td:last-child{color:#ffffff;font-weight:500}\n.fw-warranty-box{background:rgba(76,175,125,.05);border:1px solid rgba(76,175,125,.25);border-radius:10px;padding:14px 16px;margin-top:14px}\n.fw-warranty-title{font-size:11px;font-weight:700;color:#4caf7d;text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px}\n.fw-warranty-text{font-size:12px;color:#8892a8;line-height:1.7}\n.fw-manual-row{display:flex;align-items:center;justify-content:space-between;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.06)}\n.fw-manual-row:last-child{border-bottom:none}\n.fw-manual-name{font-size:13px;color:#b0b8cc}\n.fw-manual-link{font-size:12px;color:#c8a254;font-weight:600;text-decoration:none;border:1px solid rgba(200,162,84,.4);padding:4px 12px;border-radius:20px;white-space:nowrap}\n.fw-shipping-box{background:rgba(200,162,84,.06);border:1px solid rgba(200,162,84,.2);border-radius:10px;padding:16px 18px;margin-top:14px}\n.fw-shipping-box p{font-size:13px;color:#c8a254;margin:0 0 6px;line-height:1.7}\n.fw-shipping-box p:last-child{margin:0;color:#8892a8}\n.fw-closing{text-align:center;padding:2rem 0 1rem;border-top:1px solid rgba(255,255,255,.08);margin-top:2rem}\n.fw-closing-ritual{font-size:13px;color:#8892a8;margin-bottom:10px;line-height:1.8}\n.fw-closing-tagline{font-size:14px;font-weight:700;color:#c8a254;text-transform:uppercase;letter-spacing:.06em;margin:0}\n@media(max-width:540px){.fw-cap-grid{grid-template-columns:repeat(2,1fr)}.fw-finish-grid{grid-template-columns:repeat(2,1fr)}.fw-vs-grid{grid-template-columns:1fr}.fw-kw-grid{grid-template-columns:1fr}.fw-naked-callout{flex-direction:column}}\n\u003c\/style\u003e\n\n\u003cdiv id=\"fw-huum-core-bkst\" class=\"fw-wrap\"\u003e\n\n\u003cp class=\"fw-sku\"\u003eHUUM CORE BK\/ST · \"Naked\" Custom-Finish Sauna Heater · Tile · Stone · Glass · Wood · 6.5–10.5 kW · Bench-Embed · 3-Year Warranty · Made In Estonia\u003c\/p\u003e\n\n\u003cdiv class=\"fw-badges\"\u003e\n  \u003cspan class=\"fw-badge\"\u003e\"Naked\" Exterior — Your Finish\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003eCeramic Tile · Stone · Glass · Wood\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003eIndustrial Stainless Steel Core\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003e6.5 kW · 9 kW · 10.5 kW Options\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003e177–566 cu ft Room Range\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003e66 lbs Stone Capacity\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003eMinimal Safety Distances\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003eBench-Embed Capable\u003c\/span\u003e\n  \u003cspan class=\"fw-badge\"\u003e240V \/ 1PH\u003c\/span\u003e\n  \u003cspan class=\"fw-badge blue\"\u003e🎛️ UKU Controls Compatible\u003c\/span\u003e\n  \u003cspan class=\"fw-badge amber\"\u003e🛡️ 3-Year Residential · 1-Year Commercial\u003c\/span\u003e\n  \u003cspan class=\"fw-badge blue\"\u003e🇪🇪 Designed \u0026amp; Made In Estonia\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"fw-intro\"\u003eThe HUUM CORE BK\/ST is the customisation variant of the HUUM CORE — the same industrial-quality Estonian electric heater, but with a \"naked\" exterior that ships as a blank canvas for you to finish with ceramic tiles, stone, glass, or wood. Same 66 lbs stone capacity, same 6.5 \/ 9 \/ 10.5 kW range for rooms from 177 to 566 cubic feet, same compact footprint with minimal safety distances and bench-embed capability. CORE performance — your exterior expression.\u003c\/p\u003e\n\n\u003cp class=\"fw-ritual\"\u003eThe same CORE inside. Your finish outside. Tile it, stone it, glass it, wood it — the BK\/ST disappears into any sauna you can imagine. 🌿\u003c\/p\u003e\n\n\u003cdiv class=\"fw-naked-callout\"\u003e\n  \u003cdiv class=\"fw-naked-callout-icon\"\u003e🎨\u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003cdiv class=\"fw-naked-callout-title\"\u003e\"Naked\" Exterior — The BK\/ST's Defining Feature\u003c\/div\u003e\n    \u003cdiv class=\"fw-naked-callout-text\"\u003eThe CORE BK\/ST ships without an exterior finish — intentionally. The structural frame is designed as a blank canvas compatible with ceramic tiles, stone, glass, or wood applied by the installer. For a custom-built sauna where every surface has been specified, the BK\/ST allows the heater to match that specification rather than interrupt it.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fw-cap-grid\"\u003e\n  \u003cdiv class=\"fw-cap-card\"\u003e\n    \u003cdiv class=\"fw-cap-icon\"\u003e🎨\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-label\"\u003eExterior\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-value\"\u003eCustom Finish\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-cap-card\"\u003e\n    \u003cdiv class=\"fw-cap-icon\"\u003e🪨\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-label\"\u003eStone Capacity\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-value\"\u003e66 lbs\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-cap-card\"\u003e\n    \u003cdiv class=\"fw-cap-icon\"\u003e📐\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-label\"\u003eRoom Range\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-value\"\u003e177–566 cu ft\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-cap-card\"\u003e\n    \u003cdiv class=\"fw-cap-icon\"\u003e🛡️\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-label\"\u003eWarranty\u003c\/div\u003e\n    \u003cdiv class=\"fw-cap-value\"\u003e3 Yr Res · 1 Yr Com\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"font-size:11px;font-weight:700;color:#c8a254;letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px\"\u003eFinish Options — Your Canvas\u003c\/p\u003e\n\u003cdiv class=\"fw-finish-grid\"\u003e\n  \u003cdiv class=\"fw-finish-card\"\u003e\n    \u003cdiv class=\"fw-finish-icon\"\u003e🟫\u003c\/div\u003e\n    \u003cdiv class=\"fw-finish-label\"\u003eCeramic Tile\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-finish-card\"\u003e\n    \u003cdiv class=\"fw-finish-icon\"\u003e🪨\u003c\/div\u003e\n    \u003cdiv class=\"fw-finish-label\"\u003eStone\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-finish-card\"\u003e\n    \u003cdiv class=\"fw-finish-icon\"\u003e🔲\u003c\/div\u003e\n    \u003cdiv class=\"fw-finish-label\"\u003eGlass\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-finish-card\"\u003e\n    \u003cdiv class=\"fw-finish-icon\"\u003e🌲\u003c\/div\u003e\n    \u003cdiv class=\"fw-finish-label\"\u003eWood\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"font-size:11px;font-weight:700;color:#c8a254;letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px\"\u003eHUUM CORE Range — Choose Your Variant\u003c\/p\u003e\n\u003cdiv class=\"fw-vs-grid\"\u003e\n  \u003cdiv class=\"fw-vs-card alt\"\u003e\n    \u003cdiv class=\"fw-vs-label\"\u003eAlso Available\u003c\/div\u003e\n    \u003cdiv class=\"fw-vs-name\"\u003eCORE Alder\u003c\/div\u003e\n    \u003cdiv class=\"fw-vs-sub\"\u003eSame CORE with pre-fitted Alder wood panels — ready to install, no exterior work required\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-vs-card active\"\u003e\n    \u003cdiv class=\"fw-vs-label\"\u003e✅ This Model\u003c\/div\u003e\n    \u003cdiv class=\"fw-vs-name\"\u003eCORE BK\/ST\u003c\/div\u003e\n    \u003cdiv class=\"fw-vs-sub\"\u003eNaked exterior — finish with tile, stone, glass, or wood to match your custom sauna interior\u003c\/div\u003e\n    \u003cspan class=\"fw-vs-badge\"\u003eCustom Finish\u003c\/span\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"font-size:11px;font-weight:700;color:#c8a254;letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px\"\u003eThree Power Options — 177 to 566 cu ft\u003c\/p\u003e\n\u003cdiv class=\"fw-kw-grid\"\u003e\n  \u003cdiv class=\"fw-kw-card s\"\u003e\n    \u003cdiv class=\"fw-kw-icon\"\u003e🔵\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-label\"\u003eEntry\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-value\"\u003e6.5 kW\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-sub\"\u003eCompact rooms · Efficient output for smaller sauna spaces\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-kw-card m\"\u003e\n    \u003cdiv class=\"fw-kw-icon\"\u003e🟡\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-label\"\u003eMid-Range\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-value\"\u003e9 kW\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-sub\"\u003eMost versatile · Wide mid-range room coverage\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"fw-kw-card l\"\u003e\n    \u003cdiv class=\"fw-kw-icon\"\u003e🔴\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-label\"\u003eMaximum\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-value\"\u003e10.5 kW\u003c\/div\u003e\n    \u003cdiv class=\"fw-kw-sub\"\u003eLargest rooms · Maximum CORE output up to 566 cu ft\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003chr class=\"fw-divider\"\u003e\n\n\u003c!-- FEATURES --\u003e\n\u003cdiv class=\"fw-acc-wrap\"\u003e\n  \u003cbutton data-fw=\"features\" class=\"fw-acc-header\"\u003e\n    \u003cspan class=\"fw-acc-title\"\u003e\u003cspan class=\"fw-acc-icon\"\u003e⚡\u003c\/span\u003e Key Features\u003c\/span\u003e\n    \u003cspan id=\"fwc-features\" class=\"fw-acc-chevron\"\u003e▼\u003c\/span\u003e\n  \u003c\/button\u003e\n  \u003cdiv id=\"fwb-features\" class=\"fw-acc-body\"\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e🎨\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003e\"Naked\" exterior — tile, stone, glass, or wood\u003c\/strong\u003e — ships as a blank canvas for custom finishing. For a custom-built sauna where every surface has been specified, the BK\/ST allows the heater to match that specification rather than interrupt it.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e🏗️\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003eIndustrial-quality stainless steel — direct stone contact\u003c\/strong\u003e — beneath any finish, the CORE BK\/ST is built from industrial-quality stainless steel with direct stone-to-element contact. Faster stone heating, longer heat retention, consistent intense heat and powerful steam throughout every session.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e📦\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003eCompact 12.2\" × 12.2\" × 32.7\" — minimal safety distances — bench-embed capable\u003c\/strong\u003e — installs in tight corners, against walls, or directly embedded into bench seating. With a custom tile or stone finish applied, the heater becomes part of the bench architecture — completely integrated.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e🪨\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003e66 lbs stone capacity — powerful steam\u003c\/strong\u003e — ladle water onto 66 lbs of heated stones for thick, sustained steam throughout the session. Authentic Nordic sauna experience without heat drop-off.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e🎛️\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003eUKU controls required — sold separately\u003c\/strong\u003e — the CORE BK\/ST requires the HUUM UKU Control system (sold separately). Contact us to add UKU controls to your order.\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-feature-row\"\u003e\n      \u003cspan class=\"fw-feature-emoji\"\u003e🇪🇪\u003c\/span\u003e\n      \u003cspan class=\"fw-feature-text\"\u003e\u003cstrong\u003eDesigned and made in Estonia — 3-year residential \/ 1-year commercial warranty\u003c\/strong\u003e — dual warranty coverage reflecting HUUM's confidence in the CORE for both home and professional wellness installations.\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- SPECIFICATIONS --\u003e\n\u003cdiv class=\"fw-acc-wrap\"\u003e\n  \u003cbutton data-fw=\"specs\" class=\"fw-acc-header\"\u003e\n    \u003cspan class=\"fw-acc-title\"\u003e\u003cspan class=\"fw-acc-icon\"\u003e📐\u003c\/span\u003e Specifications\u003c\/span\u003e\n    \u003cspan id=\"fwc-specs\" class=\"fw-acc-chevron\"\u003e▼\u003c\/span\u003e\n  \u003c\/button\u003e\n  \u003cdiv id=\"fwb-specs\" class=\"fw-acc-body\"\u003e\n    \u003ctable class=\"fw-spec-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBrand \/ Model\u003c\/td\u003e\n\u003ctd\u003eHUUM — CORE BK\/ST\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManufacturing\u003c\/td\u003e\n\u003ctd\u003eDesigned \u0026amp; made in Estonia\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eExterior\u003c\/td\u003e\n\u003ctd\u003e\"Naked\" — custom finish: tile, stone, glass, or wood\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCore Construction\u003c\/td\u003e\n\u003ctd\u003eIndustrial-quality stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePower Options\u003c\/td\u003e\n\u003ctd\u003e6.5 kW · 9 kW · 10.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e240V \/ 1PH\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRoom Capacity\u003c\/td\u003e\n\u003ctd\u003e177–566 cubic feet\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eStone Capacity\u003c\/td\u003e\n\u003ctd\u003e66 lbs — direct element contact\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.2\" W × 12.2\" D × 32.7\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSafety Distances\u003c\/td\u003e\n\u003ctd\u003eMinimal — bench-embed compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eControls\u003c\/td\u003e\n\u003ctd\u003eUKU required — sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3-year residential · 1-year commercial (elements excluded)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n    \u003cdiv class=\"fw-warranty-box\"\u003e\n      \u003cdiv class=\"fw-warranty-title\"\u003e🛡️ 3-Year Residential \/ 1-Year Commercial Warranty\u003c\/div\u003e\n      \u003cdiv class=\"fw-warranty-text\"\u003eElements excluded from coverage. View full warranty terms in the Warranty PDF in the Manuals tab. Contact us for warranty queries.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- MANUALS --\u003e\n\u003cdiv class=\"fw-acc-wrap\"\u003e\n  \u003cbutton data-fw=\"manuals\" class=\"fw-acc-header\"\u003e\n    \u003cspan class=\"fw-acc-title\"\u003e\u003cspan class=\"fw-acc-icon\"\u003e📄\u003c\/span\u003e Manuals \u0026amp; Documentation\u003c\/span\u003e\n    \u003cspan id=\"fwc-manuals\" class=\"fw-acc-chevron\"\u003e▼\u003c\/span\u003e\n  \u003c\/button\u003e\n  \u003cdiv id=\"fwb-manuals\" class=\"fw-acc-body\"\u003e\n    \u003cdiv class=\"fw-manual-row\"\u003e\n      \u003cspan class=\"fw-manual-name\"\u003eHUUM CORE — User Manual\u003c\/span\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/9424\/4673\/files\/HUUM_CORE_H1013072-82-92_Manual.pdf?v=1765839552\" class=\"fw-manual-link\" target=\"_blank\"\u003eView PDF\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-manual-row\"\u003e\n      \u003cspan class=\"fw-manual-name\"\u003eHUUM CORE — Sauna Sizing Guide\u003c\/span\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/9424\/4673\/files\/HUUM_CORE_H1013072-82-92_Sizing.pdf?v=1765839552\" class=\"fw-manual-link\" target=\"_blank\"\u003eView PDF\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-manual-row\"\u003e\n      \u003cspan class=\"fw-manual-name\"\u003eHUUM CORE — Warranty Document\u003c\/span\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/9424\/4673\/files\/HUUM_CORE_H1013072-82-92_Warranty.pdf?v=1765839552\" class=\"fw-manual-link\" target=\"_blank\"\u003eView PDF\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-manual-row\"\u003e\n      \u003cspan class=\"fw-manual-name\"\u003eHUUM CORE — Stone Requirements\u003c\/span\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/9424\/4673\/files\/HUUM_CORE_H1013072-82-92_Stone_Requirements.pdf?v=1765839552\" class=\"fw-manual-link\" target=\"_blank\"\u003eView PDF\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"fw-manual-row\"\u003e\n      \u003cspan class=\"fw-manual-name\"\u003eHUUM CORE — Element Requirements\u003c\/span\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0273\/9424\/4673\/files\/HUUM_CORE_H1013072-82-92_Element_Requirements.pdf?v=1765839553\" class=\"fw-manual-link\" target=\"_blank\"\u003eView PDF\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- SHIPPING --\u003e\n\u003cdiv class=\"fw-acc-wrap\"\u003e\n  \u003cbutton data-fw=\"shipping\" class=\"fw-acc-header\"\u003e\n    \u003cspan class=\"fw-acc-title\"\u003e\u003cspan class=\"fw-acc-icon\"\u003e🚚\u003c\/span\u003e Shipping \u0026amp; Delivery\u003c\/span\u003e\n    \u003cspan id=\"fwc-shipping\" class=\"fw-acc-chevron\"\u003e▼\u003c\/span\u003e\n  \u003c\/button\u003e\n  \u003cdiv id=\"fwb-shipping\" class=\"fw-acc-body\"\u003e\n    \u003cdiv class=\"fw-shipping-box\"\u003e\n      \u003cp\u003e🚚 Packed and shipped within 1–3 business days. Delivered within 5–10 business days. Shipping costs calculated at checkout.\u003c\/p\u003e\n      \u003cp\u003eUse the Sauna Sizing Guide in the Manuals tab to select the right kW. UKU controls required and sold separately — contact us to add them to your order. The naked frame ships ready for your chosen finish to be applied by your installer.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"fw-closing\"\u003e\n  \u003cp class=\"fw-closing-ritual\"\u003e🎨 Custom Finish — Tile · Stone · Glass · Wood · 🪨 66 lbs Stones · ⚡ 6.5–10.5 kW · 📦 Bench-Embed · 🛡️ 3-Yr Residential · 🇪🇪 Made In Estonia\u003c\/p\u003e\n  \u003cp class=\"fw-closing-tagline\"\u003eHUUM CORE BK\/ST — The Same CORE. Your Finish. 🔥\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('click',function(e){\n  var btn=e.target.closest('[data-fw]');\n  if(!btn)return;\n  var id=btn.getAttribute('data-fw');\n  var body=document.getElementById('fwb-'+id);\n  var chev=document.getElementById('fwc-'+id);\n  if(!body||!chev)return;\n  var isOpen=body.classList.contains('open');\n  body.classList.toggle('open',!isOpen);\n  chev.classList.toggle('open',!isOpen);\n});\n\u003c\/script\u003e","brand":"HUUM","offers":[{"title":"06.5 (177-318 CF)","offer_id":48857383862424,"sku":"H1013012","price":3399.97,"currency_code":"USD","in_stock":true},{"title":"09.0 (283-460 CF)","offer_id":48857383895192,"sku":"H1013022","price":3499.97,"currency_code":"USD","in_stock":true},{"title":"10.5 (354-566 CF)","offer_id":48857383927960,"sku":"H1013032","price":3599.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/8190\/2488\/files\/huum-core-bk-st-sauna-heater-6-5kw-10-5-kw-sak80312-full-view.jpg?v=1776400005","url":"https:\/\/fr33domwellness.com\/products\/huum-core-bk-st-sauna-heater-with-uku-local-controller-and-stones-sak80312","provider":"FR33DOM WELLNESS","version":"1.0","type":"link"}