{"product_id":"huum-uku-ext-box","title":"HUUM UKU Extension Box Extension Box for HUUM Heaters Over 12kW","description":"\u003ch5 data-end=\"213\" data-start=\"192\"\u003e\u003cstrong data-end=\"213\" data-start=\"195\"\u003eSpecifications\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\" data-end=\"573\" data-start=\"215\"\u003e\n\u003cthead data-end=\"242\" data-start=\"215\"\u003e\n\u003ctr data-end=\"242\" data-start=\"215\"\u003e\n\u003cth data-col-size=\"sm\" data-end=\"227\" data-start=\"215\"\u003e\u003cstrong data-end=\"226\" data-start=\"217\"\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth data-col-size=\"sm\" data-end=\"242\" data-start=\"227\"\u003eUKU Ext Box\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-end=\"573\" data-start=\"271\"\u003e\n\u003ctr data-end=\"293\" data-start=\"271\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"285\" data-start=\"271\"\u003e\u003cstrong data-end=\"284\" data-start=\"273\"\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"293\" data-start=\"285\" data-col-size=\"sm\"\u003e240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"336\" data-start=\"294\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"325\" data-start=\"294\"\u003e\u003cstrong data-end=\"324\" data-start=\"296\"\u003eCircuit Breaker Amperage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"336\" data-start=\"325\" data-col-size=\"sm\"\u003e2 × 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"362\" data-start=\"337\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"350\" data-start=\"337\"\u003e\u003cstrong data-end=\"349\" data-start=\"339\"\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"362\" data-start=\"350\" data-col-size=\"sm\"\u003e3.25 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"390\" data-start=\"363\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"375\" data-start=\"363\"\u003e\u003cstrong data-end=\"374\" data-start=\"365\"\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"390\" data-start=\"375\" data-col-size=\"sm\"\u003e7\" (178 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"418\" data-start=\"391\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"403\" data-start=\"391\"\u003e\u003cstrong data-end=\"402\" data-start=\"393\"\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"418\" data-start=\"403\"\u003e4\" (101 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"448\" data-start=\"419\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"432\" data-start=\"419\"\u003e\u003cstrong data-end=\"431\" data-start=\"421\"\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"448\" data-start=\"432\" data-col-size=\"sm\"\u003e10\" (254 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"486\" data-start=\"449\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"470\" data-start=\"449\"\u003e\u003cstrong data-end=\"469\" data-start=\"451\"\u003eMounting Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"486\" data-start=\"470\" data-col-size=\"sm\"\u003eWall-mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"515\" data-start=\"487\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"501\" data-start=\"487\"\u003e\u003cstrong data-end=\"500\" data-start=\"489\"\u003eListing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"515\" data-start=\"501\" data-col-size=\"sm\"\u003eSGS Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-end=\"573\" data-start=\"516\"\u003e\n\u003ctd data-col-size=\"sm\" data-end=\"531\" data-start=\"516\"\u003e\u003cstrong data-end=\"530\" data-start=\"518\"\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-end=\"573\" data-start=\"531\" data-col-size=\"sm\"\u003e3-Year Residential \/ 1-Year Commercial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5 data-end=\"598\" data-start=\"580\"\u003e\n\u003cstrong data-end=\"598\" data-start=\"583\"\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h5\u003e\n\u003ch5 data-end=\"598\" data-start=\"580\"\u003e\u003cstrong data-end=\"598\" data-start=\"583\"\u003eDescription\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp data-end=\"886\" data-start=\"600\"\u003eThe \u003cstrong data-end=\"630\" data-start=\"604\"\u003eHUUM UKU Extension Box\u003c\/strong\u003e is an essential component for anyone using a HUUM sauna heater over 12kW. Designed to work seamlessly with \u003cstrong data-end=\"766\" data-start=\"738\"\u003eHUUM UKU control systems\u003c\/strong\u003e, this extension unit increases switching capacity and ensures safe, stable operation for larger, higher-output heaters.\u003c\/p\u003e\n\u003cp data-end=\"1189\" data-start=\"888\"\u003eEngineered and built in Estonia with HUUM’s signature minimalist Scandinavian styling, the UKU Ext Box is compact, durable, and easy to mount. If you’re running a 12kW+ HUUM heater—such as HIVE, HIVE Mini, or CLIFF\/STEEL high-output models—this extension box is required to complete your installation.\u003c\/p\u003e\n\u003ch5 data-end=\"1211\" data-start=\"1196\"\u003e\u003cstrong data-end=\"1211\" data-start=\"1199\"\u003eFeatures\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul data-end=\"1578\" data-start=\"1213\"\u003e\n\u003cli data-end=\"1269\" data-start=\"1213\"\u003e\n\u003cp data-end=\"1269\" data-start=\"1215\"\u003eRequired for all \u003cstrong data-end=\"1267\" data-start=\"1232\"\u003eHUUM electric heaters over 12kW\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1339\" data-start=\"1270\"\u003e\n\u003cp data-end=\"1339\" data-start=\"1272\"\u003eFully compatible with all \u003cstrong data-end=\"1319\" data-start=\"1298\"\u003eHUUM UKU controls\u003c\/strong\u003e (sold separately)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1407\" data-start=\"1340\"\u003e\n\u003cp data-end=\"1407\" data-start=\"1342\"\u003eProvides additional switching capacity for large-format heaters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1452\" data-start=\"1408\"\u003e\n\u003cp data-end=\"1452\" data-start=\"1410\"\u003eClean, minimalist \u003cstrong data-end=\"1442\" data-start=\"1428\"\u003elight grey\u003c\/strong\u003e housing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1482\" data-start=\"1453\"\u003e\n\u003cp data-end=\"1482\" data-start=\"1455\"\u003eWall-mounted installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1524\" data-start=\"1483\"\u003e\n\u003cp data-end=\"1524\" data-start=\"1485\"\u003eSGS listed for safety and performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1578\" data-start=\"1525\"\u003e\n\u003cp data-end=\"1578\" data-start=\"1527\"\u003eDesigned, engineered, and manufactured in Estonia\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-end=\"1607\" data-start=\"1585\"\u003e\u003cstrong data-end=\"1607\" data-start=\"1588\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul data-end=\"1723\" data-start=\"1609\"\u003e\n\u003cli data-end=\"1635\" data-start=\"1609\"\u003e\n\u003cp data-end=\"1635\" data-start=\"1611\"\u003eHUUM UKU Extension Box\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1671\" data-start=\"1636\"\u003e\n\u003cp data-end=\"1671\" data-start=\"1638\"\u003eInstallation \u0026amp; Operation Manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1723\" data-start=\"1672\"\u003e\n\u003cp data-end=\"1723\" data-start=\"1674\"\u003e3-Year Residential \/ 1-Year Commercial Warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1728\" data-start=\"1725\"\u003e\n\u003ch3 data-end=\"1759\" data-start=\"1730\"\u003e\u003cstrong data-end=\"1759\" data-start=\"1733\"\u003eRequired for Operation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1794\" data-start=\"1761\"\u003eThis unit is required when using:\u003c\/p\u003e\n\u003cul data-end=\"1902\" data-start=\"1796\"\u003e\n\u003cli data-end=\"1832\" data-start=\"1796\"\u003e\n\u003cp data-end=\"1832\" data-start=\"1798\"\u003e\u003cstrong data-end=\"1830\" data-start=\"1798\"\u003eHUUM Sauna Heaters Over 12kW\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1902\" data-start=\"1833\"\u003e\n\u003cp data-end=\"1902\" data-start=\"1835\"\u003eMust be paired with a \u003cstrong data-end=\"1884\" data-start=\"1857\"\u003eHUUM UKU Control System\u003c\/strong\u003e (sold separately)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-end=\"1929\" data-start=\"1909\"\u003e\u003cstrong data-end=\"1929\" data-start=\"1912\"\u003eDocumentation\u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong data-end=\"3957\" data-start=\"3940\"\u003eManual Links:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"3623\" data-end=\"3807\"\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\n\u003ch4\u003e\n\u003ca href=\"https:\/\/drive.google.com\/file\/d\/1W4GrzndDGffwK65mWFa3O79hIIOEgoAv\/view?usp=drive_link\" title=\"HUUM Warranty\" rel=\"noopener\" target=\"_blank\"\u003eHUUM Warranty\u003c\/a\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\n\u003ch4\u003e\n\u003ca href=\"https:\/\/drive.google.com\/file\/d\/1cNIjWZQ04ZmSa9lcOY9G_JDGdFDusHvp\/view?usp=drive_link\" title=\"HUUM Required Elements\" rel=\"noopener\" target=\"_blank\"\u003eHUUM Required Elements\u003c\/a\u003e\u003ca href=\"https:\/\/drive.google.com\/file\/d\/18e75rsIuioOB5J6sNUkZqEt4nERt0ht6\/view?usp=drive_link\" title=\"HUUM Stone Requirements\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\n\u003ch4\u003e\u003ca rel=\"noopener\" title=\"HUUM UKU IOM Owners Manual\" href=\"https:\/\/drive.google.com\/file\/d\/1XEyr6jX5V3maWzmzDHENzuFBXombZODL\/view?usp=drive_link\" target=\"_blank\"\u003eHUUM UKU IOM Owners Manual\u003c\/a\u003e\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\n\u003ch4\u003e\u003ca rel=\"noopener\" title=\"HUUM UKU Installation Diagram\" href=\"https:\/\/drive.google.com\/drive\/folders\/1TwC82VfyOu40z0aJpU07KFWRQsVlVHnD?usp=drive_link\" target=\"_blank\"\u003eHUUM UKU Installation Diagram\u003c\/a\u003e\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\n\u003ch4\u003e\u003ca rel=\"noopener\" title=\"HUUM UKU Installation Video\" href=\"https:\/\/youtu.be\/0C2Nz-_r2pQ?si=PlCmlsyPfs2Tyibj\" target=\"_blank\"\u003eHUUM UKU Installation Video\u003c\/a\u003e\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3623\" data-end=\"3680\"\u003e\u003ca href=\"https:\/\/drive.google.com\/file\/d\/14uT2bBDm1Jgta4VvCgECAV4MYJM-G0Pv\/view?usp=drive_link\" target=\"_blank\" title=\"HUUM UKU Extension Box Installation Manual\" rel=\"noopener\"\u003e\n\u003ch4\u003eHUUM UKU Extension Box Installation Manual\u003c\/h4\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HUUM","offers":[{"title":"Default Title","offer_id":51433104769311,"sku":"H2003012","price":773.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/2177\/3855\/files\/HUUM-Extension-Box.jpg?v=1764599729","url":"https:\/\/recoverylux.com\/products\/huum-uku-ext-box","provider":"RecoveryLux","version":"1.0","type":"link"}