{"product_id":"huum-cliff-11stu-pkg-cliff-series-11kw-sauna-heater-package","title":"HUUM CLIFF 11STU Pkg CLIFF Series 11kW Sauna Heater Package","description":"\u003c!-- HUUM CLIFF 11STU Package - 11kW Complete Floor-Standing Sauna Heater, Natural Stone Surface --\u003e\u003c!-- Floor-standing | 240V\/1PH | 354-566 cu ft | Complete - control + UKU Ext Box + 165 lbs stones --\u003e\u003c!-- SKU: 534-BDL-CLIFF105STULBWDX | CLIFF Series | UKU Local w\/Wood Case or UKU WiFi at checkout --\u003e\u003c!-- Red Dot Award winner | Natural stone surface exterior | Minimal safety clearances --\u003e\u003c!-- Single 50A breaker \/ 6 AWG | 165 lbs (5 boxes) 1-2\" rounded olivine --\u003e\u003c!-- Stone size 1-2\" (3-5cm) - smaller than DROP\/HIVE which use 2-4\" stones --\u003e\u003c!-- 5-year warranty (elements excluded) | SGS Listed | Made in Estonia | Pallet delivery --\u003e\u003c!-- 7 document sections: CLIFF IOM | CLIFF Elements Required | UKU IOM | UKU Diagram | UKU Video | Warranty | Stone Requirements --\u003e\n\u003cstyle\u003e\n  .sl { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 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color: #0f172a !important; line-height: 1.7 !important; margin: 0; }\n  .sl-manual { background: #fff; border: 1px solid #e2e8f0; border-radius: 6px; padding: 1.25rem 1.5rem; margin-bottom: 1.5rem; }\n  .sl-manual-item { margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid #e2e8f0; }\n  .sl-manual-item:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }\n  .sl-manual-item h6 { font-size: 14px; font-weight: 700 !important; color: #0f172a !important; margin: 0 0 0.5rem; }\n  .sl-doc-link { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 500; color: #4a5568; background: #fff; border: 1px solid #d1d5db; border-radius: 5px; padding: 8px 14px; text-decoration: none; }\n  .sl-doc-link:hover { background: #e8f0fa; border-color: #bfd4ef; color: #2563a8; }\n  .sl-divider { border: none; border-top: 1px solid #e2e8f0; margin: 1.75rem 0; }\n  @media (max-width: 768px) {\n    .sl-feat-grid { grid-template-columns: 1fr 1fr; }\n    .sl-spec-grid { grid-template-columns: 1fr; gap: 1.5rem; }\n    .sl-brand1, .sl-brand2 { grid-template-columns: 1fr; gap: 1rem; padding: 1rem 0; }\n    .sl-brand2 { display: flex; flex-direction: column-reverse; }\n    .sl-brand1 h4, .sl-brand2 h4 { font-size: 18px !important; }\n  }\n  @media (max-width: 480px) {\n    .sl { padding: 0; }\n    .sl-feat-grid { grid-template-columns: 1fr; gap: 8px; }\n    .sl-feat { padding: 0.8rem 0.9rem; }\n    .sl-inc-grid { grid-template-columns: 1fr; }\n    .sl-spec-grid { gap: 1.25rem; }\n    .sl-spec-table, .sl-spec-table tbody, .sl-spec-table tr, .sl-spec-table td { display: block; width: 100%; }\n    .sl-spec-table { border: none; }\n    .sl-spec-table tr { border: 1px solid #e2e8f0; border-radius: 6px; margin-bottom: 6px; padding: 8px 12px; background: #fff !important; }\n    .sl-spec-table tr:nth-child(odd) { background: #f8fafc !important; }\n    .sl-spec-table td { border: none; padding: 1px 0; }\n    .sl-spec-table td:first-child { font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: #64748b; width: 100%; padding-bottom: 2px; }\n    .sl-spec-table td:last-child { font-size: 15px; font-weight: 700 !important; color: #0f172a !important; width: 100%; word-wrap: break-word; overflow-wrap: break-word; }\n    .sl-divider { margin: 1.25rem 0; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"sl\"\u003e\n\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eHUUM CLIFF 11STU Pkg CLIFF Series 11kW Sauna Heater Package\u003c\/h2\u003e\n\u003cp\u003eThe HUUM CLIFF 11STU Package is a complete sauna heater package for rooms from 354 to 566 cubic feet, including the CLIFF 11kW floor-standing heater, UKU sauna control with wood case (Local or WiFi - selected at checkout), UKU Extension Box, and 165 lbs of rounded olivine diabase sauna stones (5 boxes). The CLIFF is a completely different heater concept from HUUM's DROP and HIVE families: where the DROP is a wall-mounted unit with a compact water-droplet form and the HIVE is an open beehive cage of maximum stone mass, the CLIFF is a slender vertical floor-standing tower with a natural stone surface that gives it the visual character of a Nordic cliff face. The CLIFF's defining engineering achievement is its exceptionally small safety clearances - as little as 9.45\" (24 cm) from surrounding walls at 11kW, reduced further to approximately half that with optional reflector panels - making it the correct choice for sauna rooms with limited wall space where other heaters cannot be placed.\u003c\/p\u003e\n\u003ch4\u003eThe CLIFF design - natural stone surface, slender tower, minimal clearances\u003c\/h4\u003e\n\u003cp\u003eThe CLIFF heater is covered in natural stone on its exterior surfaces - the actual stone of the surrounding rock face that inspired the heater's name and form. This stone surface gives the CLIFF a visual character that is entirely unlike any other electric sauna heater: it does not look like an appliance. It reads as a stone column standing in the sauna room, concealing the heating elements and stone basket within a natural rock exterior. The Red Dot Award-winning design is the result of a deliberate design principle that the heater should be as visually unified with a natural sauna interior as possible. The slender vertical tower profile - 10.6\" wide - and the minimal wall clearances are what make the CLIFF the appropriate choice for sauna rooms where a wider or more projecting heater cannot be placed without consuming too much usable bench space or violating safety distances from the wall or bench.\u003c\/p\u003e\n\u003ch4\u003e165 lbs of stone in a slender tower - 1\"-2\" rounded olivine\u003c\/h4\u003e\n\u003cp\u003eThe CLIFF 11 carries 165 lbs (5 boxes) of rounded olivine diabase stones. This is a meaningful stone load for a slender tower heater - comparable to the DROP series but in a radically different form factor. The stone size specification for the CLIFF is different from the DROP and HIVE: the CLIFF uses 1\"-2\" (3-5 cm) rounded olivine stones rather than the 2\"-4\" (5-10 cm) stones used in the DROP and HIVE. The smaller stone size fits the CLIFF's narrower basket geometry and allows denser packing within the slender tower body. Using the wrong stone size - particularly oversized stones - can restrict airflow through the CLIFF's basket and affect both performance and element life. The 5 boxes of correct-specification 1\"-2\" rounded olivine included in this package are the right stones for this heater. The internal air duct system speeds up heating by approximately 25% by directing airflow efficiently through the stone mass, and removable ribs inside the basket make stone loading and arrangement easier and more precise.\u003c\/p\u003e\n\u003ch4\u003eUKU Extension Box included - single 50A \/ 6 AWG circuit\u003c\/h4\u003e\n\u003cp\u003eThe CLIFF 11kW package includes the UKU Extension Box, which is included in this package (indicated by the X in the SKU suffix). The 11kW CLIFF requires a single 50A two-pole breaker and 6 AWG wire - a single-circuit installation unlike the full HIVE's dual-circuit requirement, but with heavier wire than the HIVE Mini 9's 50A \/ 8 AWG. Confirm that the electrical panel has an available 50A slot and engage a licensed electrician to plan the 6 AWG wire run before ordering. The control is UKU Local w\/Wood Case as standard, with UKU WiFi available at checkout. This package ships on a wooden pallet via scheduled freight delivery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-hook\"\u003eComplete 11kW floor-standing sauna heater package for rooms from 354 to 566 cubic feet. Includes CLIFF 11kW heater, UKU control with wood case (Local or WiFi - select at checkout), UKU Extension Box, and 165 lbs of rounded olivine diabase stones (5 boxes). Natural stone surface exterior - Red Dot Award-winning design. Slender 10.6\"-wide tower - minimal safety clearances (9.45\" from walls at 11kW). Internal air duct - 25% faster heat-up. Removable ribs for precise stone loading. 165 lbs stone capacity - 1\"-2\" rounded olivine (smaller than DROP\/HIVE). Single 50A breaker, 6 AWG wire. 240V \/ 1-phase. Max 230°F. SGS Listed. Ships on wooden pallet - scheduled delivery. 5-year warranty (elements excluded). Made in Estonia by HUUM.\u003c\/div\u003e\n\u003cdiv class=\"sl-badges\"\u003e\n\u003cspan class=\"sl-badge\"\u003eComplete package - control + ext box + 165 lbs stones\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e11 kW\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e354 to 566 cu ft\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eNatural stone surface exterior - Red Dot Award design\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eSlender 10.6\" wide tower - floor-standing\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eMinimal clearances - 9.45\" from walls\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e165 lb stone capacity - 5 boxes included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e1\"-2\" rounded olivine - correct CLIFF stone size\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eInternal air duct - 25% faster heat-up\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eRemovable ribs for precise stone loading\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUKU Extension Box included\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eUKU Local w\/Wood Case or UKU WiFi - select at checkout\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eSingle 50A breaker - 6 AWG - 240V 1-phase\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eShips on wooden pallet - scheduled delivery\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003eSGS Listed - made in Estonia\u003c\/span\u003e \u003cspan class=\"sl-badge\"\u003e5-year warranty (elements excluded)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"sl-spec-grid\"\u003e\n\u003cdiv class=\"sl-spec-tables\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower output\u003c\/td\u003e\n\u003ctd\u003e11 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e240V \/ 1-phase \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmperage draw\u003c\/td\u003e\n\u003ctd\u003e43.75 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit breaker required\u003c\/td\u003e\n\u003ctd\u003eSingle 50A (standard 2-pole - no GFI\/GFCI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire gauge\u003c\/td\u003e\n\u003ctd\u003e6 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Extension Box\u003c\/td\u003e\n\u003ctd\u003eRequired - included in this package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eSGS Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eRoom sizing and stones\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoom volume\u003c\/td\u003e\n\u003ctd\u003e354 to 566 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone capacity\u003c\/td\u003e\n\u003ctd\u003e165 lbs (5 boxes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStones included\u003c\/td\u003e\n\u003ctd\u003eYes - 5 boxes rounded olivine diabase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone size\u003c\/td\u003e\n\u003ctd\u003e1\" to 2\" (3-5 cm) rounded - CLIFF-specific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax temperature\u003c\/td\u003e\n\u003ctd\u003e230°F (110°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eClearances and installation\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e10.6\" (270 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety clearance from walls\u003c\/td\u003e\n\u003ctd\u003e9.45\" (24 cm) at 11kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWith reflector panels\u003c\/td\u003e\n\u003ctd\u003eApproximately half standard clearances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eFloor-standing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStone loading\u003c\/td\u003e\n\u003ctd\u003eRemovable ribs for easier precise loading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAir duct\u003c\/td\u003e\n\u003ctd\u003eInternal - 25% faster heat-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-image\"\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eDesign\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior surface\u003c\/td\u003e\n\u003ctd\u003eNatural stone - Nordic cliff face aesthetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfile\u003c\/td\u003e\n\u003ctd\u003eSlender vertical tower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign award\u003c\/td\u003e\n\u003ctd\u003eRed Dot Award winner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eStainless steel components, natural stone exterior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMade in Estonia by HUUM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eControl options - select at checkout\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Local w\/Wood Case\u003c\/td\u003e\n\u003ctd\u003eDigital control with thermo-ash wood enclosure - on-site\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU WiFi\u003c\/td\u003e\n\u003ctd\u003eAdds HUUM app remote preheat and scheduling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eHUUM app - iOS and Android (WiFi variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUKU Extension Box\u003c\/td\u003e\n\u003ctd\u003eRequired and included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-spec-block\"\u003e\n\u003ch4\u003eCLIFF series\u003c\/h4\u003e\n\u003ctable class=\"sl-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLIFF Mini 3.5\/4kW\u003c\/td\u003e\n\u003ctd\u003eWall-mounted | 106-212 cu ft | 30A \/ 10 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLIFF 6kW\u003c\/td\u003e\n\u003ctd\u003e177-318 cu ft | 30A \/ 10 AWG | 165 lbs stones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLIFF 9kW\u003c\/td\u003e\n\u003ctd\u003e318-530 cu ft | 50A \/ 8 AWG | 165 lbs stones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLIFF 11kW (this listing)\u003c\/td\u003e\n\u003ctd\u003e354-566 cu ft | 50A \/ 6 AWG | 165 lbs stones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cdiv class=\"sl-inc-grid\"\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eHUUM CLIFF 11kW floor-standing sauna heater - natural stone surface exterior\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eUKU sauna control with wood case (Local or WiFi - selected at checkout)\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eUKU Extension Box\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eRounded olivine diabase sauna stones - 5 boxes (165 lbs) - 1\"-2\" CLIFF size\u003c\/div\u003e\n\u003cdiv class=\"sl-inc-item\"\u003eInstallation and operation manual\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 1rem; font-weight: 500; color: #64748b; font-size: 14px;\"\u003e\u003cstrong\u003eOptional accessories (sold separately):\u003c\/strong\u003e HUUM CLIFF safety railing (recommended), reflector panels (reduce wall clearances to approximately half), CLIFF embedding flange (for bench installation). A licensed electrician is required for all electrical connections.\u003c\/p\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eWhy the HUUM CLIFF 11STU Package stands out\u003c\/h3\u003e\n\u003cdiv class=\"sl-feat-grid\"\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eNatural stone surface - the Nordic cliff aesthetic\u003c\/div\u003e\n\u003cp\u003eThe CLIFF exterior is covered in natural stone - not a stone-textured finish, but actual natural stone surfaces that give the heater the visual character of a Nordic cliff face. The Red Dot Award-winning design makes the CLIFF the only electric sauna heater that reads as a natural stone element in the room rather than an appliance. From every angle the stone surface is visible, consistent with HUUM's design principle that the heater should be stylish from all directions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eMinimal clearances - fits where others cannot\u003c\/div\u003e\n\u003cp\u003eThe CLIFF 11kW requires only 9.45\" (24 cm) safety clearance from surrounding walls - a fraction of the clearance required by most other floor-standing heaters at this output level. With optional reflector panels installed, this clearance is approximately halved. For sauna rooms with limited space between the heater position and the wall or bench, the CLIFF may be the only 11kW heater that can be correctly installed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eSlender 10.6\" tower - maximum usable bench space\u003c\/div\u003e\n\u003cp\u003eAt 10.6\" wide, the CLIFF has a significantly smaller footprint than round floor-standing heaters like the HIVE Mini. The slender vertical tower maximises the usable bench and floor space in the sauna room, particularly in smaller or narrowly configured rooms where a wider heater would consume too much floor area or project too far from the wall into the bathing zone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eInternal air duct - 25% faster heat-up\u003c\/div\u003e\n\u003cp\u003eThe CLIFF's internal air duct directs airflow more efficiently through the stone mass during warm-up, reducing heat-up time by approximately 25%. For an 11kW heater covering rooms up to 566 cu ft, faster heat-up translates directly to a shorter wait from switch-on to bathing temperature - a meaningful benefit for regular sauna users and commercial installations where session turnaround matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eRemovable ribs - easier, more precise stone loading\u003c\/div\u003e\n\u003cp\u003eThe CLIFF's internal basket ribs are removable, making it significantly easier to load the 165 lbs of 1\"-2\" rounded olivine stones into the narrow tower body precisely and without damage to the elements. Correct stone placement in the CLIFF basket is important for airflow, element life, and steam quality - the removable ribs are the engineering detail that makes correct loading practical rather than difficult.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-feat\"\u003e\n\u003cdiv class=\"sl-feat-title\"\u003eUKU WiFi - remote preheat for a large sauna\u003c\/div\u003e\n\u003cp\u003eA 354-566 cu ft sauna room at 11kW takes 40-55 minutes to reach bathing temperature. Upgrading to UKU WiFi at checkout adds HUUM app control on iOS and Android - start the preheat before leaving work and arrive to a ready sauna. The UKU Extension Box is included in this package; no additional hardware is needed for the WiFi upgrade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eAbout HUUM\u003c\/h3\u003e\n\u003cdiv class=\"sl-brand1\"\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2022-11\/CliffPKG1.jpg\" alt=\"HUUM CLIFF 11kW floor-standing sauna heater package with natural stone surface, UKU control with wood case, and 165 lbs olivine stones\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eMade in Estonia - Red Dot Award winner\u003c\/span\u003e\n\u003ch4\u003eHUUM CLIFF 11STU. 11kW. 354-566 cu ft. Natural stone surface. Slender tower. Minimal clearances.\u003c\/h4\u003e\n\u003cp\u003eHUUM is an Estonian sauna heater company. The CLIFF is HUUM's most architecturally distinctive heater - a slender floor-standing tower with a natural stone exterior surface, designed for sauna rooms where space is limited and the heater's visual character is as important as its heating performance. At 11kW covering rooms from 354 to 566 cubic feet, the CLIFF 11 is the largest output in the CLIFF floor-standing series. The package includes the CLIFF 11kW heater, UKU control with wood case (Local or WiFi at checkout), UKU Extension Box, and 5 boxes of 1\"-2\" rounded olivine stones. Ships on a wooden pallet via scheduled freight. We are an authorized HUUM dealer.\u003c\/p\u003e\n\u003cul class=\"sl-check\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete package\u003c\/strong\u003e - CLIFF 11kW, UKU control w\/wood case, UKU Ext Box, 165 lbs stones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e11kW, 354-566 cu ft\u003c\/strong\u003e - single 50A \/ 6 AWG, 240V\/1PH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural stone surface\u003c\/strong\u003e - Red Dot Award design, Nordic cliff aesthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimal clearances\u003c\/strong\u003e - 9.45\" from walls, halved with reflector panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\"-2\" rounded olivine stones\u003c\/strong\u003e - CLIFF-specific size, 5 boxes included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-brand2\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"sl-brand-tag\"\u003eCLIFF vs DROP vs HIVE - choosing the right HUUM\u003c\/span\u003e\n\u003ch4\u003eWhen the CLIFF is the right HUUM heater - and when it is not\u003c\/h4\u003e\n\u003cp\u003eThe HUUM range covers three distinct floor-standing heater families for larger rooms. The DROP series (wall-mounted, 122 lbs stones) is the compact wall-mounted choice for rooms up to 460 cu ft. The HIVE and HIVE Mini series (floor-standing open beehive, 330-528 lbs stones) prioritise maximum stone mass for soft sustained steam. The CLIFF (floor-standing slender tower, natural stone surface, 165 lbs stones, minimal clearances) is the correct choice when two conditions apply: the room is between 354 and 566 cubic feet, and the sauna room layout makes minimal wall clearance a priority - either because bench positions leave limited space for a wider heater, or because the aesthetic calls for a natural stone element in the room rather than a metal cage or water-drop form. When space is not the constraint and maximum stone mass is the priority for the same room range, the HIVE Mini 9 or 10.5 would carry more stone in the same room. When the CLIFF's natural stone exterior and slender profile are the design priority, nothing else in the HUUM range competes with it.\u003c\/p\u003e\n\u003cp\u003eLicensed electrician required. Single 50A \/ 6 AWG. No GFI\/GFCI. CLIFF safety railing recommended. Reflector panels and embedding flange sold separately. Pallet delivery requires a scheduled appointment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cimg class=\"sl-brand-img\" src=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2022-11\/CliffPKG1.jpg\" alt=\"HUUM CLIFF 11kW installed in sauna showing slender tower profile with natural stone surface and minimal wall clearance\"\u003e\n\u003c\/div\u003e\n\u003chr class=\"sl-divider\"\u003e\n\u003ch3\u003eManuals and Documents\u003c\/h3\u003e\n\u003cdiv class=\"sl-manual\"\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eCLIFF Installation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-11\/HUUM-CLIFF-Sauna-Heater-IOM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e CLIFF Installation and Operation Manual (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eCLIFF Elements Required\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2022-03\/HUUM%20Elements%20Required.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e CLIFF Elements Required (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eUKU Installation and Operation Manual\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-12\/HUUM-UKU-Control-IOM.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e UKU Installation and Operation Manual (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eUKU Installation Diagram\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-05\/HUUM-UKU-Installation-Diagram.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e UKU Installation Diagram (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eWarranty\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-09\/HUUM-Warranty.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Warranty Information (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sl-manual-item\"\u003e\n\u003ch6\u003eStone Requirements\u003c\/h6\u003e\n\u003ca class=\"sl-doc-link\" href=\"https:\/\/prod.cms.bathingbrands.com\/sites\/default\/files\/2025-12\/-HUUM-Stone-Requirements.pdf\" target=\"_blank\"\u003e \u003csvg stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"14\" width=\"14\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e Stone Requirements (PDF) \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cdiv class=\"sl-warranty\"\u003e\n\u003ch5\u003e5-year limited warranty (elements excluded)\u003c\/h5\u003e\n\u003cp\u003eThe HUUM CLIFF 11STU Package is covered by HUUM's \u003cstrong\u003e5-year limited warranty\u003c\/strong\u003e from the date of purchase. The warranty covers defects in manufacturing and materials under normal use conditions. Heating elements are excluded from the 5-year coverage and carry their own separate warranty period. The warranty does not cover damage caused by improper installation, use of incorrect or non-approved stones (including wrong stone size), operating the heater without the required stone load, or failure to follow HUUM's installation and operating guidelines. A licensed electrician is required for all electrical connections. Do not connect to a GFI\/GFCI breaker. Proof of purchase from an authorized HUUM dealer is required. We are an authorized HUUM dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HUUM","offers":[{"title":"UKU Local Black","offer_id":52263836188954,"sku":"534-BDL-CLIFF105STULBX","price":4341.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/Wood Case","offer_id":52263836221722,"sku":"534-BDL-CLIFF105STULBWDX","price":4654.0,"currency_code":"USD","in_stock":true},{"title":"UKU Local w\/White Case","offer_id":52263836254490,"sku":"534-BDL-CLIFF105STULBWHX","price":4421.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Black","offer_id":52263836287258,"sku":"534-BDL-CLIFF105STUWBX","price":4603.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/Wood Case","offer_id":52263836320026,"sku":"534-BDL-CLIFF105STUWBWDX","price":4916.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi w\/White Case","offer_id":52263836352794,"sku":"534-BDL-CLIFF105STUWBWHX","price":4683.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Gold","offer_id":52263836385562,"sku":"534-BDL-CLIFF105STUWGDX","price":4778.0,"currency_code":"USD","in_stock":true},{"title":"UKU Wifi Glass","offer_id":52263836418330,"sku":"534-BDL-CLIFF105STUWGX","price":5003.0,"currency_code":"USD","in_stock":true},{"title":"UKU WIfi Mirror","offer_id":52263836451098,"sku":"534-BDL-CLIFF105STUWMRX","price":5266.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/1690\/0634\/files\/CliffPKG1.jpg?v=1779376694","url":"https:\/\/mediriser.com\/products\/huum-cliff-11stu-pkg-cliff-series-11kw-sauna-heater-package","provider":"Mediriser","version":"1.0","type":"link"}